I'll pretty much echo scott. I'm fine with stuff that has some semblance of a release date, or if it's already out in Japan, has been confirmed for US or EU release, but announced games change on a dime. I can understand games like The Last Guardian and Dragon's Crown, that have been subject to changed and cancelled dates, but that's a bit of a different scenario.
As for Versus, at the rate Square Enix is going, we'll be lucky if it doesn't eventually materialize as a pachinko game for mobile phones.