An android or SDK version that could be used with a heads up display system would be impressive. If you can do more then Spanish, you should consider talking to the US Military.

For the love of FSM, do it! I speak for a vast majority of Android users here on HN when I say I'd buy this even if it cost five times what it does now.

Absolutely. Android is really popular in Korea, a Korean-English pack would make a killing with all the english students and expats.