If SE was willing to introduce an actually interesting facet of new gameplay around crowd control and debuffs, I'd want to keep things like repose or foot graze but otherwise right now... It's very tied to things like deep dungeons or eureka, which I think could warrant SE to keep them, but perhaps not inside the main toolkit of those jobs and instead in a secondary kit proper to specific types of content.

Also if you remove lucid from BLM, all the BLM mains that claim to like non standard lines will lose half of their lines, amusingly enough. It's one of the main skills making non standard possible, behind transpose.