Zero-K

Has prepend and append commands, click and drag controls for actions with in a range, mouse-drawn formations, and many general quality of life improvements.

I would say, as a TL;DR right out the gate, that this is hands-down, the best RTS I have ever played for coop and campaign content.

Its physics-driven combat, enormous unit selection, terrain manipulation, intelligent command features, substantial campaign, cooperative options, capable AI, and huge multiplayer battles create impressive long-term depth.

It’s a great RTS game with loads of units to experiment with, an active community, massive campaign, and other game modes to keep players coming back for more.

Zero-K offers so many units, commands, mechanics, and tactical possibilities that the interface can initially appear intimidating.

Game has quite long learning curve with tons of tools to give yourself an advantage.