In case you've missed it, a TA-like game with a Galactic-War metagame is production in a small french indie studio.
They are already financed, but they need a little more to refine the aesthetic and polish of the game.
https://www.kickstarter.com/projects/insaneunity/win-that-war/posts/1589918
https://www.kickstarter.com/projects/insaneunity/win-that-war/
It looks like what PA promised but never delivered, even if they won't have the deepness of Supcom, it's always good to see a child of TA !
There is a alpha demo to download on the kickstarter page. Already told them that the zoom and UI need to be reworked (they are quite open to critics), but I liked what I saw