Maybe they can let people assign singular buttons to their bar manually but the game automates assigning the smart buttons (simple upfront but personal preference made available).

Like for dancer you can assign the dance moves if you wanted, rather than the smart buttons SE provides. Smart buttons being different than macros in that they're SE made and should carry the full features of being a button (like pre-loading).

I'd be more worried about collapsing if it collapses most of the job's activity, like bringing BLM ley lines into one button doesn't really make the job any less engaging but changing a job that is 80% combos into one or two buttons.. . . lol.

Of course if they bring down the button count they can consider other spells too, like if they brought down the combos into single buttons but then made those two button slots saved (assuming a 1 2 3 combo) into two more combos that interlink, you might have started something interesting (yet a bit complicated). 1 1 1, 2 2 2 (of course) but also 1 2 1, 2 1 2, etc. Have to be careful with factorial like math though... could easily make it super complicated lol. But it does allow a lot more spells.

Not looking for them to collapse every single thing possible 'just because' but certainly if they can make it feel smother and less finger spider without making it feel like 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 4 I would personally be okay with that.