Well, what about debating for Superman or Batman? And using feats from Infinite Crisis and stuff? Will it be affected?

It depends how much they retcon. I've heard that Blackest Night and some other things will still play into canon, so it makes me think that it may end up being something similar to Age of X, where it's not entirely different, it's just a reaimagining 

Oh, then I hope it's like Age Of X. I hope this doesn't end up like the original Crisis in 85.