I am really keen on plugging into Age of Empires 2 - although practically I think we need a couple of years of improvements before LLMs would be smart/fast enough to react to the game in realtime. Currently they can't react fast enough - although specially trained networks could be viable.
I'm pretty sure that AI did take at least a few games off of the pros. IIRC the professional team only had one win, the last match.
I do agree that the game was terribly dumbed down to make it tractable. I keep hoping they'll revisit Dota 2 to see if they can find meaningful improvements and tackle the full game.