Flight Sim Creator. RPG Creator. MMO Creator. Racing Game Creator. Hack 'n Slash Creator. What-ever Creator...
All great ideas but let's not fool ourselves and simply think that just because we can put a name on an idea that it is easily done. To modify any existing TGC product into any other form will take a LONG time. Lee is already at work on a non-violent edition of FPS Creator and then there is the whole FPSC X9/X10 migration thing going on.
If you check up on game genre sales then you would see why there is no RTS Creator being made. RTS games are a tiny tiny fraction of the gaming market today. They had their time more than a decade ago but now it's simply a small niche market for a few of the remaining (worn-out) brands. Many RTS players actually prefer the older classics from the latest titles anyway.
Sorry to sound so negative. Just wanted to give this thread a touch of reality before everyone went "OMG what a great idea!!1"