So after trying Fire Emblem Birthright for the first time, a lot of my fears have been put to rest. The introduction of a ton of classes and new weapons seemed to be overwhelming, but the new colour triangle does balance the weapons easily, though I still find it weird that bows and tomes are added in the triangle.
The pairing up mechanic has largely been nerfed which is pretty good, since it was overly broken in Awakening. Plus now that enemies get the benefits too, it adds an additional layer of difficulty, and I'm still not used to getting double attacked because I forget enemies combo when standing next to each other
Story is good so far and I enjoy finding out what happens next.
What I have yet to determine is reclassing and promotions, since I'm still not fond of the new changes from Awakening, which I really liked. However, once I actually promote and reclass, I'll see if it's for better or worse :p
The weapon durability removal is hard to get used to, since stronger weapons causes debuffs which is really annoying, though I'm sure I'll get used to it quickly