That's a good question.
I think the original card tables... should work fine? I mostly streamlined the dungeons in v2 to fit in a printed zine and to cut down on the amount of layout work I would have to do. But to my knowledge it should work out to about the same number of encounters per dungeon, and similar types of encounters. Nothing right off the bat that strikes me as a problem, though it has been a while since I looked at the original rules so, delver beware!