for the instant Overhead things i think he was talking about setting up unblockables via a low assist timed at the same time as an instant air dash overhead, or overhead assist with a perfectly timed low. etc. etc. It looks fairly simple but chances are people are gonna find even crazier shit to use XD
also the first couple of weeks of mvc3 for me is gonna be finding out which of dantes specials are the most annoying vs every character(Basically seeing which one annoys storm, then magneto, then wekser, and so on.)