I have some thoughts.
Gods help us all.
T2 and T3 navy are too good. They scale much better than air and hover.
I am shocked to the core by the revelation that a unit which is specialized for a specific role and is an order of magnitude more expensive, beats units that are cheaper and are essentially trespassing. Shocked.
Snipes are a bit too strong. Perhaps, when an ACU hits 0 hp, it falls to the ground and becomes a crippled ACU. Crippled ACU cannot move, shoot, build, regen, or be repaired, but can absorb another 10k or 20k before it goes nuclear. Just an idea.
The ramblings of the clinically insane.
That's without considering the fact that balancing the game around the experience and playstyle of pro-players is quite possibly the worst way to go at it, for obvious reasons.