Your suggestion would have been lazier though, you'd only make one animation, one skill effect and one sound effect rather than two. Buttons like Kyuten exist because you can end up not having enough actions and feeling like you don't have much to do, and buttons like Senei exist because they're big damage buttons that you didn't have before. I'll also have 1 free slot on my three hotbars, as I'll be taking Leg Sweep off because it's not really doing anything. Shoha 2 is a welcome addition as well, it gives Meditation stacks a proper use in AoE situations rather than just pressing Shoha and accepting that there's no spender for AoE.