Please beware this is only a demo version, suggestion are well accepted.
Attenzione questa è solamente una bozza, sono benvenuti suggerimenti.

<?xml version="1.0" encoding="UTF-8"?>
<presets xmlns="http://josm.openstreetmap.de/tagging-preset-1.0"
        author="roberto"
        email="rb.colombo@gmail.com"
        website="gruppocorvi.org"
        version="0.8_2018-03-24"        
        shortdescription="hiking/mtb routes with trail marking"
        description="Tagging presets for relations mapping hiking routes with trail marking">
    <group name="Mountain track project" it.name="Progetto sentieri">        
            <item name="path" it.name="sentiero" icon="presets/transport/way/path.svg" type="way">
            <label text="Hiking path" it.text="Sentiero" />
            <space />
            <key key="highway" value="path" />
            <text key="name" text="name/serial" it.text="Nome/Codice" />
            <text key="ref" text="Reference" it.text="Origine"/>
                <label text="Hiking attributes" it.text="Attributi sentiero"/>
                <text key="symbol" text="Symbol description" it.text="Descrizione simbolo"/>
                <combo key="sac_scale" text="SAC scale" it.text="Scala SAC">      
                    <list_entry value="hiking" display_value="T1" short_description="T Turistico" />
                    <list_entry value="mountain_hiking" display_value="T2" short_description="E Escursionistico" />
                    <list_entry value="demanding_mountain_hiking" display_value="T3" short_description="EE Escursionisti Esperti" />
                    <list_entry value="alpine_hiking" display_value="T4" short_description="EE Escursionisti Esperti" />
                    <list_entry value="demanding_alpine_hiking" display_value="T5" short_description="EEA escursionisti esperti con att. alpinistiche" />
                </combo>
                <label text="MTB attributes" it.text="Attributi mountain bike"/>
                <combo key="bicycle" text="Bicycle" it.text="Bicicletta" >
                    <list_entry value="yes" display_value="Si" />
                    <list_entry value="no" display_value="No" />
                    <list_entry value="designated" display_value="designated" />
                    <list_entry value="private" display_value="privata" />
                    <list_entry value="permissive" display_value="permessive" />
                </combo>
                <combo key="mtb:scale" text="Singletrail Skala" it.text="Singletrail Skala" >                  
                    <list_entry value="0" display_value="S0" />
                    <list_entry value="1" display_value="S1" />
                    <list_entry value="2" display_value="S2" />
                    <list_entry value="3" display_value="S3" />
                    <list_entry value="4" display_value="S4" />
                    <list_entry value="5" display_value="S5" />
                </combo>
                <combo key="mtb:scale:uphill" text="Uphill difficulty" it.text="Difficoltà salita" >                  
                    <list_entry value="0" display_value="0" />
                    <list_entry value="1" display_value="1" />
                    <list_entry value="2" display_value="2" />
                    <list_entry value="3" display_value="3" />
                    <list_entry value="4" display_value="4" />
                    <list_entry value="5" display_value="5" />
                </combo>
                <link href="https://wiki.openstreetmap.org/wiki/IT:Key:mtb:scale" />
       <optional>
                <text key="width" text="width" it.text="larghezza" />
                <combo key="trail_visibility" text="Trail visibility and orientation" it.text="Visibilità traccia sentiero">
                    <list_entry value="excellent" display_value="eccellente"/>
                    <list_entry value="good" display_value="buona"/>
                    <list_entry value="intermediate" display_value="discreta"/>
                    <list_entry value="bad" display_value="cattiva"/>
                    <list_entry value="horrible" display_value="pessima"/>
                    <list_entry value="no" display_value="non visibile"/>
                </combo>
                <combo key="maintenance" text="maintenance" it.text="Manutenzione sentiero">
                    <list_entry value="ok" display_value="buona" />
                    <list_entry value="poor" display_value="cattiva" /> 
                    <list_entry value="no" display_value="nessuna" />
                    <list_entry value="needs_repair" display_value="necessaria_manutenzione" />
                </combo>
            <text key="operator" text="Operator" it.text="Operatore"/>
            <text key="website" text="website" it.text="Pagina web"/>
            <text key="color" text="Color (HTML name or hexadecimal code)" it.text="Colore (Nome html o codice esadecimale)" />
        </optional>
</item>
<item name="via ferrata" it.name="Via ferrata" icon="presets/transport/way/path.svg" type="way" >
            <link href="https://wiki.openstreetmap.org/wiki/Proposed_features/via_ferrata" />
            <label text="Via ferrata" it.text="Via ferrata" />
            <space />
            <key key="highway" value="via_ferrata" />
            <text key="name" text="Name" it.text="Nome/Codice" />
            <text key="ref" text="Reference" it.text="Origine" />
            <text key="symbol" text="Symbol description" it.text="Descrizione simbolo"/>
            <text key="description" text="Description" it.text="Descrizione" />
            <optional>
                <combo key="via_ferrata_scale" text="Difficulty scale" it.text="Grado difficoltà">
                    <list_entry value="1" display_value="F" short_description="Facile" />
                    <list_entry value="2" display_value="MD" short_description="Mediamente difficile" />
                    <list_entry value="3" display_value="D" short_description="Difficile" />
                    <list_entry value="4" display_value="TD" short_description="Terribilimente difficile" />
                    <list_entry value="5" display_value="ED" short_description="Estremamente difficile" />
                </combo>
            <text key="operator" text="Operator" it.text="Operatore"/>
                <text key="website" text="website" it.text="Pagina web"/>                
                <combo key="color" text="Color (HTML name or hexadecimal code)" it.text="Colore (Nome html o codice esadecimale)" values_context="color" values="black,brown,green,red,blue,gray,white,#CD853F" />
                <combo key="osmc:symbol" text="Machine-Readable Hiking Path Symbol" it.text="Simbolo" values="red:white:red_bar,green:white:green_dot,blue:white:blue_slash,yellow:white:yellow_x,orange:white:orange_backslash,black:white_round:black_diamond"
                      display_values="red bar,green dot,blue slash,yellow x,orange backslash,black diamond in white circle" />
                <link href="https://wiki.openstreetmap.org/wiki/Key:osmc:symbol"                  
                      it.href="https://wiki.openstreetmap.org/wiki/IT:Key:osmc:symbol" it.text="Simbolo OSMC" />
                <link href="https://wiki.openstreetmap.org/wiki/DE:Wanderweg-Symbole" text="Trail markings" />                
            </optional>
            <roles>
                <role key="forward" text="forward segment" requisite="optional" type="way" />
                <role key="backward" text="backward segment" requisite="optional" type="way" />                
            </roles>
        </item>
    </group>
</presets>

Presets_SentieriItaliani-preset.xml, Presets_SentieriItaliani.zip