Right-Analog really does wonders. There are times i play Valkyria Chronicles 2 with one hand.
I cant even imagine how tough playing Dissidia without the right analog would even be. Lol
Dissidia wasn't too bad without the extra stick, but man, it just feels so fricking right and natural with it.
I honestly didn't think that mapping the digital or face button to the right analog stick for PSP games would make much of a difference, but man, it does.
The 3rd Birthday is another I can't imagine playing with no camera controls. It would be maddening. As it stands, it feels really awesome. I've been loving Square-Enix's handheld outtings this generation. It's a shame their console efforts have been weak as hell (although I do like FFXIII, truth told.
I broke down and bought FF Tactics: War of the Lions today, despite owning the PS1 original disc. It was onlyl $4.89 thanks to PS+, so I couldn't resist. I kind of like it just sitting on my memory card. I'll get to it when I can. I'm working through completing Rayman Origins right now. Loving that game as well.
I think, without a bit of hyperbole and PlayStation fanboyism (I'm totally a big PS fan), I can say that the Vita is the best portable gaming system I've every played/owned. It's not perfect, and I can't wait to see what the firmware improvements add to it, but for a system that hasn't even been out in the US a month yet, it's been the best handheld experience I've had in a long, long time, if not ever.