What type of dedicated development are you looking for? If it is made for AndroidTV than it should work on all AndroidTVs with that particular OS. Most of Shield "exclusives" are because Nvidia created the ported software or paid for it. Game apps, not general apps, would only be the ones that realistically have hardware limitations.
So, what exactly are you looking for with Mi Box specific development? Maybe news developments?
What type of dedicated development are you looking for? If it is made for AndroidTV than it should work on all AndroidTVs with that particular OS. Most of Shield "exclusives" are because Nvidia created the ported software or paid for it. Game apps, not general apps, would only be the ones that realistically have hardware limitations.
So, what exactly are you looking for with Mi Box specific development? Maybe news developments?