I'm wholeheartedly against skills being culled anymore in 5.0.
The low-level experience since Stormblood dropped has been an absolute snoozefest. If more skills are removed or condensed then we're essentially gonna be seeing 2-button rotations until we hit 50.
Plus there really isn't any room to add more buttons for most jobs. The bloat is already at the breaking point.

Honestly what I'd like to see is optional variants on existing skills and rotations in the form of selectable passives.
i.e., maybe allow people to tweak their rotations to spread their damage more evenly, instead of being so focused on burst windows - or maybe allow people to give up some personal DPS in exchange for party buffs/enemy debuffs.