Not again...

[Lyth]

...

I'm not so sure. The change to Shake it off indicates that they're at least willing to rework existing abilities to introduce in new effects.

Homogenisation only ever seems to be an issue when players want to keep an imbalanced status quo. People always cite the "X has superior design. Don't nerf X, buff Y to its level," meme, but when pressed on implementing the changes, the homogenisation card comes out. Let's not remove the GCD penalty or stance change resource costs from all tanks. That would make us homogenised. By the way, why can't we have a gap closer? Please fix. Okay, now that we have a gap closer, I don't like the resource costs on Onslaught. Why can't it have no resource costs like Plunge except be on half the recast? This ability is useless!

Some degree of variation is good, but you still need to be able to answer the same problem set. If not, you run into situations where you must bring X for a given fight, which forces players to switch mid-tier, instead of simply using the job's skillset to clear. Nobody wants that.