PSone games you've already purchased on ps3/psp not playable day one
Not ever making it clear if we'd have to rebuy PSone games for vita
Now account lockouts
#3 was a real deal breaker for me, and I'm still mad at Nintendo due to the same crap on 3DS (Except I can still play my non US region DS games on my US 3DS) Both Nintendo and Sony don't understand that we don't want to buy games over and over again. At least I don't. I won't buy any more virtual console / PSN until they allow usage across at least their own consoles/handhelds.
(I don't own a Vita, and at this rate wont.) And then I'd probably buy entire catalogs if they had a supported emulator for PC.