I am glad you like it. Yeah, that ship is definitely the best freighter for sure, it's not even too bad in combat as long as you don't get swarmed or meet those nasty pirate Hammers. As for what else there is to do - it depends on what faction you joined, they each get their own set of missions. The thing is, you cannot go through 100% of the story in multiplayer for some weird reason. As soon as I got access to the alien systems, my quests stopped and said I could only continue them in single player. A shame, since that is what I WOULD have been doing. For me, as it stands, it's a matter of clearing out the hives in the alien systems and taking back the space for us. It looks like destroying all hives in an alien system "claims" it. Working our way to the capital system is not going to be easy, since there are no places to stop and refuel on the way - you have to rely on passing ships and ask them to give you fuel.
Yeah, I got a few mods favourited incase we go down that route. I wanted to hold off on mods until we had had our feel with vanilla, since once they are "on", you cannot then turn them off without wiping all player and world data. I am up for giving some of those a try later down the line.