I can understand saying that SFV feels bland when the only unique mechanic is the V-system which isn't very interesting for most characters. Maybe it's also that every character has fewer normals and specials in V? I'm sure more advanced techniques will be found in the future, but the simplicity of the game is what makes it feel bland to most people I've seen with that complaint.
EDIT: And a lot of the normals feel universalized as well, with most medium punches being plus on block, no cancelable crouching light kicks, cancelable hard punches but not kicks, etc.