Get the big Japanese publishers (capcom, square, konami, sega) on board. Western games are nice but western devs develop so rarely for handhelds that they don't really matter. Make a GoW and GT vita. They should really already be in production to be honest. Keep investing in psmobile and new IPs like gravity rush. Give take two a little money to make sure bioshock vita still happens so that consumers will get a confidence boost in the machine. Paying for a GTA stories wouldn't hurt either. Price cut to 200 or less.
Time for hype