I hope you don't think I am being petty, but this is exactly the sort of thing that should be arranged by players, rather than the development team adjusting the code for a dungeon.
I've led a few naked dungeon crawls. The rules are simple...
All player enter wearing only shorts/shirt, and carrying a torch or lantern and an NPC-bought weapon.
No spell-casting of any sort... mage / weaver / bushi / chiv / necro.
Kill stuff, and loot armour & weapons in a group rota system (although characters with Magic Resist are not allowed to loot armour.)
Work your way through the dungeon, equipping as you go.
Finally reach the "boss" monsters of the dungeon.
The first time my guild tried this was in Despise. Watching the reaction of other players as three characters, with a dozen bits of armour between them, stormed ogre lord island, was hilarious.
At least one person pulled our paperdolls, and saw Lord/Lady titles and what we were wearing. The response was "you are all bloody mad."
This sort of thing is where UO excells over other games: We have the freedom to do stupid stuff within the existing game design.
We're only limited by our own imaginations, and don't really need a "dungeon for silly people" to be coded into the game.
I understand your suggestion, but I would contend that such things are for us, as players, to find for ourselves rather than have them pre-arranged for us.