I'm not saying they are in any way all that similar, but if you're doubting what an 8x8 grid can do for a turn-based wargame, may I suggest Into The Breach:
It's quite fun, I played a lot of it during the pandemic. It's sort of like Advance Wars, but when you lose you can choose to send one of your leveled up characters back in time, which lets you use them again in a new game.