I too am wondering how to use these skins as a custom hero's default. Some of them are awesome, but I can't figure out how to have a unit spawn in game using these skins. Is there a way to, for instance, have a hero trained with the "King Arthas Death Knight" (Uart) model?
Edit: I've found a trigger called "Unit - Set Unit Skin" that could be exactly what we're looking for, the only problem (to me, anyways) is that instead of using WC3's new unit code (Eg. Hpal, hrif, htow, etc) it is using integers. Any ideas on how to use this trigger properly?
Edit 2: Managed to get something working, it's sloppy but it'll do until someone informs me of a better way. What you do is have a Variable set to "Integer", have a unit already placed in-game using the skin that you want on the hero/unit, likely under the "Neutral Passive" player, and have these triggers set up (if you want the unit's skin to change upon being trained by a player).
In the trigger, the "Undead transport ship" is using the Female Death Knight skin VIA double clicking the unit once it's placed in the map and changing the skin ID.
Note: If you want the unit to spawn
already in the map it's much easier and doesn't require the variables.