RTS tacticians will desire actual tactical combat like Total War no matter what, but why GS fans would loathe anything about Football Manager style simulation? Our contribution in battles right now is non existent, we can only reinforce our troops unrealisticly, everything else happens with mathematical simulations of numbers, in Football Manager, simulation still happens the same way, automatically, the difference is player can actually affect the outcome by reacting to numbers and using different tactics to manipulate them, still you can't won every match that you're playing in Football Manager, tactics aren't affecting the match massively, outcome still heavily tied to players training decisions and other things like performances.
Change trainings with discipline and performances with morale, include a different window for battles, show how battle is going on and let the player use buttons for predetermined tactics, let these predetermined tactics change some numbers, here you go, same as EU 4 but we can interfere a little.
The problem is that we can't pause the game since player isn't the only one who fight battles, i've already stated that.