Shinten with 50 kenki would be as boring if not more, you would just press less buttons, getting two Shinten under raid buff would be as braindead because of ishikoten ect...
No what they need is a reason for you to even remember you have a ressource bar and kaiten was just that at least.

I honestly couldn't care less about the others change at this point, they made some that are good some are meh... for the most controversial i actually like auto crit, and i think circle goken is dumb but whatev. It's not as susbtential as fucking up the entire job design as they did when they removed our alternative Kenki spender with nothing to replace it.