I can't complain about the improvements/rework to ichigo. He is so much more fluid now, his animations and sound are shmexy. they added hollow mask taunt, and his final smash is the Aizen killer. Not only was it a fan service but it is canon, fits well and was thought out well (even though it's slow and you can usually dodge it
). As a smash character, I'm glad they kept his pseudo wavedash as that is his identity as a soul reaper, being able to move like a ghost.
Only thing i'd change is add Goku's english charge up shout to his down taunt (not the one heard when he goes K-K or side taunts).