Considering that the Marine Corp gave up their heavy armor in 2021, I suspect these battles would need to be coastal with heavy air support. And you're right about drones since I suspect any conflict of consequence will have them going forward.
Given what is happening in Ukraine today, I think any contemporary game would have to include drones to a greater degree than what is in BS. However, overwhelming drones and meat assaults would not be fun.
+1 on your Asian suggestions.
Since BS has been more or less retired, I'm hoping for another modern like NATO vs Russia or Korea 2025. I'd also like a Cold War expansion updating to the late 80's and other seasons especially Winter.
I definitely prefer playing against a human regardless of whether I win or lose. Part of the difference for me is the dialog that may accompany a battle.
An example that comes to mind is infantry spots an iTOW in the woods so other units, which cannot see the iTOW, area fire into its location or close enough that you hope to suppress it while other units close for a kill.