The game doesn't have any challenge after Ch 3.
The pairing system is too much. It absolutely trivializes a number of mechanics, such as speed penalties. What is more is it makes Fire Emblem more volatile than it already is; the difference between an attack and an attack followed up by a dual strike, is immense. I LOVE the concept of visibly having the characters fight together, but Dual strikes should only be dealing like maybe half damage, and the base stat bonuses are unnecessary. Getting bonuses to stats like atk, def, avoid, hit, etc., was already more than enough. Simply having the characters able to stack without the Rescue penalties and restrictions of the past is huge.
Awakening, like Thracia 776, is largely fake difficulty. The only thing that will kill you, besides Counter (usually by someone who initiated the attack), are reinforcements. As it stands, it is a memory game. I am all for enemy reinforcements forcing the player to have to respond and adapt, but vague text hints are not sufficient enough telegraphing. Sometimes the game doesn't even grant you that. Either have them appear and not attack until next turn (maybe have them not give XP), or have some kind of warning graphic that suggests where they could come from.
Having fliers that can attack up to 10 cells away appear on a map that is only 16 cells wide, with enough speed to double healers, is a bit much. I fully anticipated that flying units would appear from the side of the screen, and walled off my healers, and Lissa still died because they had Spears.
It just upsets me. Path of Radiance is by far the best designed FE as of recent as far as difficulty is concerned. The Maniac difficulty found on the Japanese version is what Lunatic should have been modelled after.
Oh, I am sure Falco will be fine if he lost something. Having the fastest vertical speed, one of the best spikes, and the best projectile is already more than enough. I am not sure how Falco's blaster has remained as it has for two games. I think Fox's blaster in SSB64 did it right: It was spaced out in such a way that you could just barely weave through it as the majority of the cast, but it still gave Fox a lot of control.