Balance, Homogenisation and Encounter Design: The Problem.

[Granyala]

TL;DR: Homogenisation may seem the answer to balance problems, but instead it’s the indicator of a much bigger problem: the lack of variety and nuances in encounter and activity design.

The DEVs want people to be able to play any class and they want super tightly tuned raid bosses.
That and is the sole reason you see every class having the same tools and having roughly the same numbers because quite frankly, it's not fun to have a class with gameplay you love but that isn't strong enough to be useful in a raid setting. Homogenization is really the only answer here if you want to keep the difficulty in raiding.

The only other answer would be to move away from super tight tuning and accept that some classes outperform others to a moderate degree. Even then, you have to factor in the players: they will shun any class that is sub par because in their eyes it makes stuff unnecessarily difficult. So players w/o the FOTM classes will face hardships. Also, most peeps would cry pretty hard if SE made savage raiding significantly easier in order to accommodate moderate class imbalance.

If there was an easy solution to the homogenization issue, DEVs of multiple MMOs would have found it by now.