@freemanitsnothe
Replays within a couple of days of an update showing M28 being beaten are usually useful, particularly if it's against an AiX version (since against 1.0 a decent player can just outplay it). Naval focused games are also likely to be more useful than land based since I get much fewer replays on naval based games (so M28 is likely to be worse at naval combat than it is at land combat).
If you've got coding experience then one issue I'm currently struggling with is figuring out the cause of the high memory usage for M28 and more generally for the default FAF AI - it's both higher than expected, and growing over time more than expected, and can cause the game to crash if it goes over 2GB (which is more likely on larger maps with lots of unit mods). More information is on the AI development discord if it was something you wanted to look at.