Yeah, I know this is going to be a bit of an unpopular opinion around here, but man...
I personally think it would've been sick if Byleth's moveset rounded out the capabilities of the whip, his light-based magic, his time travel skills, and his martial arts ability instead of pulling out the 3 different weapons with admittadly standard attacks for their archetype.
Right now it sort of feels like a moveset wherein all the moves are taken from different characters and as a result he kinda looks clunky and lacks the flow of say, Ike or Marth. He just pulls 4 random weapons in and out of existence without any smooth transition or effect.
Also for someone who has
TIME TRAVEL and a
WHIP SWORD, I am deeply disappointed Byleth isn't as nearly as cool as Young Xehanort, for shame.