OH WOW! I LOVE IT! I have been looking for some oldschool C&C-ish clones and here it is carrying stuff from my other fav RTS Total Annihilation. If this can grow this will be awesome, so glad I found it this early! :)
Feel free opening an issue with suggestions/ideas for improvement on GitHub. I can't speak for the others but TA/SupCom was a series I've missed out on.
I only played with TA, basically you could collect the wreckages with a robot to turn them into money. I have discovered some minor bugs, will do a list of them and post it on Github, but I seriously had a blast with this playing yesterday :)