3. Is absolutely still an issue expecially when manufacturers advise on disabling OS features for compatibility. Dont forget that user base you talk about, this is an OS upgrade so if its not stable, its not suitable. My god is it not stable, read kernal processor power management. Its a stability nightmare for general users.

So bother with all that mac imitation especially when the upgrade is not possible? Just buy the more power efficient, faster and now improved value Apple devices.