Now a lot of people hate Zynga for limiting the sending of resources. But this is not main problem of the game.
1.Omega balance. Gator shield is OP. Colossus shield is suck.
2.Units balance. LGL, MRLS, Medivac, Tomahawks should receive a buff.
3.Walls must have more HP.
4.We need the base sandbox.
5.I agree with the limits on sending resources. Even now I can send 10 million resources per one request.
Curseius, discussed about this. Check this video.