Well If Im right, the thing runs on android, and if your good with technology, youd be able to write some apps for it to display your stuff, you wouldnt have to "hack" it. Then again, im not too up to date on cell phone operating systems, so im not sure if thats entirely true. And as for the nobody will see it thing, I dont think BurntBiscuits would really care! If I understand his ideology on this build correctly, he wants the thing to be as close to actual MJOLNIR as possible. Thats why he wanted the PC intergrated into the suit. So since this is essentially a HUD and he has enough money to blow on this, I think he should do it! If he did it right it would be awesome!
Well the source you linked only states that "Recon Instruments has even hinted at an open API app development and download community". That doesn't sound very definitive. But I'd be happy to see it all in action, too, of course