Going to make this quick and concise as I can!
We need more maps. I have never seen an RTS in my life with so few maps. A small community of modders who don't really understand your world builder managed to make some already, so how it is that you - the people who actually made the game - can't do the same? Taking the 2v2 maps and making them available in other modes does not count.
Moved in the right direction to address the problem of every race having only one viable (and boring) strategy focused on spamming their most OP unit combined with an OP 2-point Elite, but the fixes might have been a little overkill. You don't need to buff or nerf 3 different aspects of a unit simultaneously to address their problems. One aspect would be fine.
Req definitely feels a bit too high now and results in rather mindless and boring spam of units. Being able to recover from early losses is good. Having so much money all the time that you don't know what to do is not good.
I am sorry but you really need to take a tip from DoW 1's expansions and implement a cap on Artillery units. I love Artillery in concept but once you actually give players unlimited access to units like this, it results in the most boring and cheesy strategies known to mankind. Nobody wants to risk actually having an all-out fight, they'd rather just spam Artillery and slow poke the enemy over the course of 30 minutes.
Big Mek Wazmakka is still the absolute worst Ork Elite. He feels both functionally bad and also thematically boring and unfulfilling. The Meks of DoW 1 and DoW 2 were both superior in different ways.
Super Abilities, even with the increased cooldown, still just feel like unnecessary slog. Everyone drops them at the same time in big engagements and it just feels like a pause button.
Doctrines need to be a focus of the next patch for sure. So many of them remain just ... bad. Unexplainably bad.