The unique experience is playing that great quality games in your hands.
I like new IPs as much as the next guy..but they can't all be new, too risky etc. Especially in the early stages, nice to have a solid library to cover basic genres. Gravity Rush was a necessity, Tear Away is a nice surprise, imo.
Don't forget it will tie in nicely with your PS3, especially with people around. And then again with the PS4, I'm sure. By then you'll probably realise it's funner to play games on the vita anyway.
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NFS MW
Sly
JSR
.....
Retro City Rampage
Possibly ratchet and I'm sure I'm forgetting a few but those are the ones I'm really looking forward to now (as well as AC3 and Killzone, of course). All-stars if they add bottomless pits. I know it sounds bandwagonish...but as soon as I heard it didn't have them, every footage looked so limiting. Really hope we hear updates on that during the delay. I didn't full understand Tear Away but if it's tower defence in nature then I'll be eagerly watching reviews of that as well. Not totally dismissing Cod either (I'm also quite thankful for 4v4....I used to love small based games, 5v5 or 6v6 in counter strike. Might be a lot less random and less of a luckfest with 8 players, especially on vita. Although I'm sure the grip will help a bit
LBP is one of the ones I forgot...damn Soul Sacrafice...perhaps persona 4...definately sine mora...it's non-stop..sonic and sega....
So many games that would suit the vita well as well, too many possibilities. [SSX, Mega Man, Crash Bandicoot, GTA...>>Sonic Generations<<] It's going to be good. I'm sure we'll get most and more, it's got so much going for it, the vita can't not pick up eventually, really. An rpg would be nice though, even action/adventure-rpg, don't think RO does it for me, but will check out some more vids later.