(I am assuming Skills = Hero ability + Feat, and "once per room" refers to the Heroic Feat)
Overlord cards would probably be overkill, given the heroes have no Class skills to work with. If you want to tweak threat level of the monsters, you could roll a Yellow die on each one's activation and have them move additional spaces (on a Move action only) equal to the Range number, when they need to catch the heroes.
Some heroes will suffer for having no class skills. Some will be unaffected. Grisban the Thirsty for example would have a lot of trouble given his hero ability only works if he uses one action doing nothing productive. Widow Tarha would have a clear advantage over many in this scenario. Will you be setting aside a few heroes for would-be gauntleteers rather than having the entire pool to choose from?
Yeah, I haven't played Descent in about 6 months so I forgot all of the exact terminology, but yes, that's what I meant.
I completely agree with you on some heroes having advantages. I was going to go through all of the ones I have and pick maybe one or two of each type for the challengers to pick. That way it gets rid of any useless ones.
I agree with the Overlord cards too. Through play testing up until Extra Life I should have a good idea on what I plan on doing. Maybe I'll play around with the dungeon builder tonight. It might make the whole process a bit easier.
Thanks for the input!