i wouldnt just say kaiten, but everything that was changed - the conal->circular aoe change made trash packs unfun, as well as removes the positional synergy with hissatsu:guren. now we have like 1 skill that requires being outside of a trash pack, and no reason to actually walk there.

the changes were half-baked and all had terrible justification. the question "do the devs even play the jobs" is more relevant than I've ever seen, though I've only been around for about a year.