K, just tried my first game on a "Large" map, as opposed to "Tiny", which is my default size.
I have to admit it's a lot better so far. You have far less control over what's going on, and feel much more like a pawn in a huge chess match than someone who can just go around manipulating the races as you see fit. I've already had one race break a non-aggression pact with me because I was (inadvertently) helping their sworn enemies, simply because as I was exploring the galaxy (UGH SO TEDIOUS) their enemies happened to be the only race that could help me. It's the first time EVER that I've ever lost that much relation with someone, and I wasn't even doing it on purpose.
Seems a lot more like the way the game was meant to be played, which makes one wonder why "Tiny" is the default size. Oh well, I'll keep playing and let you know. I've been playing for about an hour and have discovered 8 or so planets. It looks like there's probably about 30-40 in all and many of the races are already at war. It looks like it's going to be an epic game.