If you like Supcom I would highly recommend Ashes of the Singularity.
The game has come a long way since it launched, and it's still being worked on by the developers, definitely a bit of a passion project for them. Honestly I would say it's criminally underrated, very solid game, in fact I'd go as far as to say it's the best RTS since SupCom.
I've played Ashes a fair bit in the past, its good , but its still not a patch on supcom, the units don't feel weighty enough, the balance of the bigger dreadnought units seems off, they seem too tanky and underpowered. I don't know , its hard to explain , it has like a mass swarming hovering drone feel to it and feels like a simulation of an epic battle rather than an actual epic battle.
Supcom had it all
Epic scale - check
Huge unit variation -Check
Each faction different -check
Base building -check
Resource Management - Check
Artillery - check
Naval , Land and Air - Check
Mod support - Check
Thriving community - Check
Puts you on the battlefield -Check
I could go on and on and on. I dont want anyone to remake or copy Supcom but surly its obvious what made this game so great ?
Ashes goes a long way but its still missing that impact , Annihilation titans almost got there but failed because it feels like your playing inside a distorted snow globe.