Let's not kid ourselves that it would be a good RTS. Starcraft 2 + expansions is a very poor game compared to brood war. If you haven't watch the ASL it's definitely worth a gander:
https://www.youtube.com/watch?v=HIpLl2W2chg
I'm still amazed that Blizzard dropped the ball on recreating the same environment that enables dynamic play, instead it's always a formation of rock paper scissors with very little nuance in between.
I feel bad for these people man. Flash, Tastosis. I get they’re doing what they enjoy, but holy shit that is not a life I want to live.
SC1 may have been harder but it's not better.
Starcraft2's problem was that it was 3 separate games with incredible patches that completely changed everything.
The balance team had no idea of the game they wanted StarCraft 2 to be. By the time it all settled down the community went back to SC:BW.
I'm positive there was some combination of SC2 patches that was amazing, if only the patch/balance team stuck with it. I don't know which set of patches that was though.
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I have ranted before about deathballs. Beginners want deathballs but advanced players want something deeper than a deathballs.
For all of their faults, SC:BW and AoE2 are anti-deathball. SC:BW is somewhat "accidentally" anti-deathball because of map bumping and poor patching.
AoE2 has incredible siege and defensive emplacements (castles and bombard cannons and siege onagers) that counter deathballs, above and beyond SC2 anti-deathball options.
The AoE2 deathballs unit, the Crossbowman (line) needs like 30+ units before it really starts to feel oppressive, and universally everyone has rams and mangonels to kinda deal with them (or Skirmishers).