Man, I could see the next Total Annihilation / Supreme Commander-like game where rough orders/instructions are given to commanders and they carry out those commands.
The scale of those games was already nuts, but that would 10x things.
The revealed preference of players is for terrible AI so games are easier. That's why AI has been going downhill.
Payday 2 is my favourite example since they've had a bug since Day 1 that lobotomizes the AI subsystem.
Specifically, there's a global cap of 1 action for all enemies per game tick, so when there's too many enemies the reaction time is 5 seconds.
The mod Full Speed Swarm fixes this bug and the game is unplayable without collaboration and a lot of skill.
It's also unnoticeable until you die or if you do a ton of research on the AI. I used to host pubs with the mod to troll other players who suddenly found the game impossible to play at lower difficulties.
I think it's possible we get an AI driven RTS but the demand is too small right now unless its a recruitment vehicle for the military.
I'm reminded of an obscure Gamecube game called Odama (https://en.wikipedia.org/wiki/Odama) which was kind of a bizarre blend between pinball + RTS, where you commanded feudal Japanese troops using the Gamecube Microphone. Of course, this was 2006, so it only accepted a short list of vocal commands like "Company halt!" and "Charge!"
BAR (https://www.beyondallreason.info/) is an open source TA clone that proposes massive scale and that is totally open. After the recent disappointment over a series of failures to bring a new big RTS game in the last 2 years, the RTS community talks a lot about this one.
The mechanics are old school, as with basically all RTS, but the openness allows for far more experiments than one would assume in a proprietary game.