How Do You Beat A Huge Map?
The thing is, there is no choke points on huge maps with a decent sized empire. You can't choke out warps and stars, and the defensive system is just too weak to handle decent sized AI fleets. The frequent siege frigate fleets that AI is so fond of using is just impossible to push back without your fleet, and these siege fleets just get bigger and bigger. I tried diplomacy so I can focus on one enemy, but it's very difficult to maintain any alliance for a long period of time because the crazy demands, such as one ally asking you to attack another ally. Not to mention sometimes alliances are broken for no apparent reason, and then five minutes later I get a huge attack fleet on my doorstep. The only thing left is mass superweapons, which still takes freaking forever.