Hi. Tried out the game on Quest 1. Interesting concept.
Tech wise. Whenever, I get back into the overview stage, the frame rate gets wonky a bit and it gets a bit dizzy.
Gameplay wise, I would ditch the single headset local multiplayer aspect. Rather just make it a single player turn based game.
However, don't do traditional turn system but rather a real time turn system with time shifts. Every time you take control to a new unit, time shifts back and after all, all units move at the same time during a turn. Have you tried out "Help Yourself" VR game on itch. It has some similar mechanics.
Make a X-Com in VR.