Don't listen to Jordan. He is giving random and obscure advice.
The mains are too far away from each other.
if zerg is too far from protoss, it is an advantage for zerg. (early game)" - Stimey
What you need to do: Make map smaller, make mains bigger, make minerals more exciting, and further try to make bases rounder and more natural looking.
Think about it. Why do you want a map to be 192/192? What are you going to fill it with? You need to make the mains big enough such that one could fit about 10 gateways inside it reasonably with all of the tech too. The naturals are not symmetrical, one of them is facing the other player, the other faces the edge of the map. Maybe it's unproductive to say this, but try mimicking a pro-maps main.