I think it's fair to say that a good skill resolution system is still desirable for a dungeon simulator. While blackmithing and diplomacy might not be common skills to use in a dungeon, climbing and sneaking would be, and it wouldn't do to have the clumsy dwarf in platemail randomly out-sneak the cunning elven rogue on a semi-regular basis.

And with the skill system from the playtest, that is precisely what happens.