Honestly, the game has already exceeded my expectations with the previews that have been shown so far. And for the record, I really enjoyed MGS2, and MGS3 rocked my socks. The only thing Kojima Pro. has ever done to dissapoint me is not release Policenauts over here, and not do a kickass remake/sequal to Snatcher. If by chance they manage to cram those games into the 50 gig BR, all the better.
More than the stealth aspects, I really enjoy the convoluted stories Kojima concocts, so I don't mind the long cut scenes & codec conversations.