My point is the Recoil and Spring Engine already exist and could easily have features removed and simplified with modding to create a Starcraft-like or Warcraft-like.

Or... what about going with 0 A.D.'s engine?

I just don't think it is a wise business decision to attempt to create an RTS as a new game studio and expect you can build the engine from scratch. Not in this day and age, the golden age of game development is gone, you can't casually take risks like that anymore.

What you end up with is a failed game on a really pretty game engine that is starting to become promising but now since the gameplay hasn't gotten enough attention from the small overworked team nobody keeps playing the game and all the work that went into building the game engine and boilerplate is wasted and forgotten.

I think it is a FAR better idea to nail the gameplay on an already made RTS engine.