It's honestly hard to pin-point exactly what would work to appeal to the NA audience. But Capitalizing a bit more on the success of the PS4 might help a bit if Sony would consider dedicating a small percentage of it's marketing for PS4 to bringing the Remote Play feature to light because I feel like some people are still not aware of it.
Also, the Vita of course needs some more serious powerhouse games from established devs and franchises to help it pick up in sales.
Personally, I want to see more JRPG support because that's where my interests lie, though that can't be said for the mass market, but it would still be nice. Like if Namco could consider localizing Tales of Innocence R and Tales of Hearts R (even if it's english text with Japanese voices and download only, I'd be satisfied) and if Square Enix could release Final Fantasy Type-0 for it, that would be wonderful. Again, that's more of a personal thing, but I think it could still help a bit.
