The biggest problem I have with a lot of games that has you sitting through an intro before any gameplay starts is that, I have no reason to 'care' yet about the characters or setting. Of course, this isn't always the case (say the intro starts out with a bang or a really interesting development, that's a good way to catch my focus). But frequently I'm finding I just want to get going with the game, and only after I've gotten a feel for how it plays/ how the characters respond/ developed an attachment to them, do I maybe want to hear about their situation.