Admittedly i'm not a game developer. But surely it can't be such a monumental task to adjust the way you select and handle your party?
Yeah, I don't see it being a massive commitment either. The building blocks for the control system we are asking for are already in place after all. Aside from permitting (and visualizing on the UI) multiple unit selection it would at most require some minor tweaking at the camera in some specific areas (and that's mostly because it's a required improvement in general, not even specific to RTS-styled controls).