I mean if someone wants to make a Starcraft inspired mod in Beyond All Reason, ALL of the equipment is already there, the lobby system, voting mechanisms, replay system etc...
I think the reason nobody has is Starcraft is so much more limited of an RTS design it feels weird to start from a Total Annihilation inspired rts game engine and take a whole bunch away (shift clicking, build cues, actually 3d trajectories of cannons, complex unit interactions rather than simplistic rock-paper-scissors relationships, actually flying aircraft, organic terrain variation instead of simplistic stepped levels...the list goes on and on)
Still, the Spring/Recoil engine is sitting there. Starting from scratch just to start from scratch seems VERY inefficient to me.
At the very least why not start as a Spring Engine/Recoil Engine mod, nail the gameplay and balance and then strike out on your own?