If only Kubo could add a little, tiny bit of effort to explain what those in the Soul King Palace, and Bach himself can actually do. If they can shoot blasts from their swords, then say so. Like, "My sword is called the fire sword, hence the reason why it shoots fire blasts and other fire related techniques."
Just to explain it, b/c the way it's going right now - it's, "Oh, my sword is a brush, so even if you can do that, I can do this." "Oh, but now that you did that, watch this." "Okay, but then I'll counter and do this." All out of the blue.
Better keep them abilities vague than explaining thoroughly and get trounced after. Looking for patterns of certain character's ability is the job for rabid fans. It's too deep for the rest of us to dig.
Ichibee's palm attack does remind me of Buddha's in Sun Wukong story though.