A harsh truth is that some amount of homogenization is unavoidable. FFXIV has been running for a while now, and job mechanic tropes will get established, and will be used, and there will be overlaps. While it is a different genre, something to consider is how there are only realistically four mechanics that a designer can use when designing weapons or characters in a shooter game: flick vs. tracking aim, and hitscan vs. projectile in terms of how the 'bullet' works. And yet there are hardly any 'homogenization' complaints for shooters with even the same weapon tropes showing up across different games. Trying to avoid homogenization at all costs stagnates job design as much as encouraging it.

I think the job action 'vocabulary' does need to be expanded. Mechanics like walking casts, walking channels, and some of the more explicit movement attacks like from PVP could be a great start to adding some much needed funk to jobs.