Kubo is actually my favorite artist in shonen Jump, despite how minimalistic his art is nowadays, he stills achieves an awesome sense of style in his characters that i love, which was always the main interest in Bleach. Tousen is still the coolest black character i've ever seen in manga.
Kishimoto art is pretty terrible nowadays and One Piece's "original" artwork never really worked for me. And really, the "surprised faces" is also used very often by both of these authors so i don't why is such a used argument against Kubo. Everyone does it.