I like mods, but I think they're overpowered for invading. The building ones (solar sails and cargo bulkheads mainly) are good. They don't do too much, but provide a nice small boost. Fog of War I like because it forces camaraderie. The corp stays together and works together, because if one person goes off invading or building solo, the others have a difficult time following. It makes everyone move together, which I think is good for corps. It also provides a new aspect of war. Now activity is more important in fighting (theoretically. There hasn't really been a war yet there but it seems like a sound assumption), because the people that move around most have more map uncovered, and are at an advantage, even over token whores who normally seem to win wars.
Expanding Galaxy I didn't check because I don't think it would be of any use with Fog of War also in place, and if forced to pick between the two I'd prefer to have Fog of War. However, if toonces/cloud for whatever reason flat out refused to have Fog of War, I'd be fine with (and prefer) Expanding Galaxy over Normal Galaxy.
Note to cloud: You've mentioned you want a more newbie friendly server. And I don't think you're particularly fond of Fog, but I'd just like you to keep in mind that Fog is beneficial to newbies in that it's less likely for a vet to come to them. They can go off into the void, build up a bit of strength in a low-competition area, and as they feel ready slowly move out into the more dangerous, skill-requiring areas that the big corps have taken. Fog gives them a gradient of different difficulties all in one server, while a normal server does not, and an Expansive just gives the vets a small area they can easily take, hold, and move onto next expansion, leaving no room really for newbs.