I always wanted RTSes to be more asymmetric but that’s harder for balance and the marketing of “competitive” ranked play.

The Goo faction in Gray Goo is cool as fuck, your “base” is just this big mobile amorphous blob that engulfs and digests resource nodes and even enemies that touch it. It can split into more copies of itself or smaller, faster blobs that further divide into your actual specialized units. Everything is a slick-looking liquid metal with glowing cyber hexagons running across the surface and eerie creaking/bending metal sound effects.