That's funny, I like a map in a "symetric"-style (best example the map "Grindstone")
Sins actually plays well in both varieties. Most multiplayer matches are held on random maps, and we just live with the occasional odd creation. Surprisingly, the biggest crap shoot is actually asteroids. Having lots of roids in the early-game allows you to get an expansive economy operational at a low cost, which can fuel rapid development or a massive fleet to crush your nearest opponent. Likewise, starting without an asteroid can be a massive liability since it leaves you without easy expansion options early-on.
If you like symmetric maps a lot, though, you might try this map pack:
https://forums.sinsofasolarempire.com/365777
Lots of great options there for the symmetry-lover.
