Port the best games of the last 20 years as fast as you can, and enhance the ones that can be graphically upgraded some for X1. Most kids today (especially the poor ones) have not played any of them, and some of us old folks missed more than a few too and some would buy out of nostalgia (that's how good old game GOG started right?). Take the money made from the ports and make new content ASAP. This can be done pretty fast (port linux games, console games etc). Note how fast Valve grew the linux catalog from a 100 games to 1000+. Linux games are already half there as they're on OpenGL for the most part (mac too probably). Take on tougher ports only for the best titles (from DirectX etc). Just don't hire the guys that did batman arkham knight...LOL and make sure they're POLISHED and up to snuff before putting them out. A year (or so) after exclusive to tegra X1/K1 make them able to play on ARM in general if you don't make enough back to at least break even on any game after that exclusive time. Again, the sales from those add to making pure exclusive content for shield TV that fully exploits X1 and forward. The whole point here is to amass money from the low hanging fruit so you can make brand new IP exclusive to Shield TV (and beyond, next handheld, tablet etc) that is BETTER than xbox360/ps3 using full power of X1 and beyond. That will help sell more devices and solidify the platform going forward. Glad they made GRID free for july, maybe extend it one more month to gain more users. Not many can get through 50+ games in 2 months anyway, and keep adding more. All of it adds value to Shield TV owners and future devices will have an even larger library to help sell the next rev of hardware. Steam kept at this for 10yrs and now they have ~80mil users last I checked.
NV should start hiring teams themselves for a gaming division that puts out games maximizing their hardware (like Grimrock guys, 6 guys who know what they're doing). Until you get that going massively pay people like gameloft etc to put out some good stuff. Pay their wages then split the profits of the game with them or something so they're at low risk and want to do the projects for your device. You have to inspire them somehow until there are enough units out there to make them want to dev for your devices. IE, nobody but the console makers themselves make games for new gen consoles until they cross the 10mil units+ mark. So to get smaller devs (who are often stuck struggling for funding) to make games pay to get the game made (wages) but their bonus is a portion of the profits
NV is making ~600mil a year, so they can afford 30-50mil a year in funding this type of stuff (heck maybe 100mil). You could put out 10-20 pretty good games a year for that. Games like puzzle stuff, adventure types (point click that seems to sell many these days, walking dead etc) don't cost 5mil/game usually so you can save on that type of stuff to put out a few really good action/strategy/rpg types each year to get more hardcore types.
My 2c on how to move the platform forward. Oh, and make sure games don't cost over $30 for the top games. Grimrock2 etc shows you can make great games under $30 (torchlights, trine games etc). They just have to be a LOT of fun.