I don't understand why people keep getting unhappy about every change.
Awakening was different, different isn't BAD. You can't just make the same game as FE 4-10 over and over and over. New iterations adding new things and becoming more accessible (given that Awakening is the best selling by far and saved the franchise) isn't a bad thing.
Awakening was different.
Awakening was bad, not because all differences are bad but because those differences in Awakening were bad.*
You can keep making classic Fire Emblem games over and over; it's a robust formula.
Awakening saving the franchise doesn't imply bad mechanics saving the franchise.
*This is subjective, but I assume you're addressing people who don't like Awakening.