Haven't played much, but looked at the changes.
Twin axes are fun, and make me wish we had more variety/dual wielding in the game
Warrior tree is an improvement , but the trees/heroes need to be made more interesting. It's just not exciting enough right now, which to me is a combo of XP requirements being too high, still somewhat boring trees, and heroes not being powerful enough.
Right now, I think the core game is there, though the underlying balance/logic issues from FE haven't all been resolved, and balancing needs to be done heavily.
Also, I think when this is done, there is easily room for another expansion. (Capitar, Umber, new toys and monsters to play with)