gonna half copy/paste my viewpoint here,

yes to combo merge, and some other funcional ones on single buttons, give space for more interesting skills and could give us something more interesting

Usually jobs have 2 combo variations, damage plus or buff/debuff, those usually require 1 button to start and 2 paths of 2 more skills, 5 total for 2 combos, so cut it to 2 button slots would actually help not having to look at your hotbar constantly.

it would benefit low level players as the combos are not 3 step ones, only 1 or 2 steps, would not have to rethink where to put all the buttons as the combo increase on level, and we might get 4 step combos or a new finisher skill button that changes on combo or change current finishers on number of extra steps, anyway is less bloat and more time you can actually focus your eyes on the field.

Thats the direct benefit of reduce numer of actuak buttons to get more shiny new ones

Just an idea of how can less buttons can open new posibilities on playstyle

They could make the new finisher skill more potent depending on combo step count as today and maybe up to 45 and after finisher delay the gcd a little, so the rotations could be more flexible as how many "auto combo" skills to use before finisher and use the increased delay(1 or 2 secs at most) of finisher to use more ogcd skills

some 1,2,3~4 combos could be fast to input (like ninja jutsus or dancer steps) and the flair close to make up for the time saved

knowing when to cut the combo before the finish skill would feel like playing a fighting game (LP,LP,LP,SK ), somefinishers could change effect on number of combo steps. Less wasted build ups if boss jumps off.

Sure, most jobs would keep the actual 2~ sec button presses but still would have more space for new stuff

Getting repetitives combos into a single button is not as they would not add more stuff so you can still have to manage multiple buttons for more rotation variety and adaptability

Sorry if this reads chopped, some similar argument was on another thread