With amount of out-of meta units and forgoten commanders, relic can make game at least two times more complex just by bringing them back from oblivion.
Arguably there are too many units and commanders overall, but it's not evenly distributed in terms of meta. They could definitely tune it up a bit.
I've sunk too much time and money into the coh2 train not to see it to its conclusion, but realistically I'm hankering for them to just kill it and bring the sequel out with a back-to-basics focus, less overall variety but better thought out and balanced within a wider context. And less DLC - or at least no commander DLC.
It's been funny seeing gimmicks and such get nerfed down to their own level over time and a lot of things that the developers thought were cool get removed or returned to be less impact. Cold tech, soviet wire, the entire OKW faction gimmick, most of the British abilities got nerfed multiple times between alpha and today. Tech adjustments to give OKW their medium tank, tech adjustments to the Soviets, probably more I'm not remembering off the top of my head.