I think it might eventually find its way in. XIV follows a vertical progression with each level tier, and there's only so many new rotational keys you can add before having to get the job through a rework.

Some people say it dumbs thing down and makes jobs 1 button spammers, however it's not as simple as that... Some jobs are indeed very simple and can go without this feature, like Machinist or Summoner if it was a combo job.

Other jobs, though, are already near the limit of how much you can add before it becomes way too busy, like Dragoon. Those indeed could benefit from a consolidated combo to free up a few binds for new things. They did this with Gunbreaker's cartridge combo and the job suddenly feels much better to play without losing any depth.

I personally don't see a lot of difference in pressing the same key 3x than pressing a sequence of 3 keys that are always bound right next to each other. They are still different actions being pressed.