Spoiler
(http://i.imgur.com/Neejh50.jpg)
My first play I started off, by turning on all of the mods except prodigious, and after a good amount of battles later I ran into a Nexus invader fleet. My fleet had been a carrier group supported by three gemni. Now I had read the fact that your supposed to avoid them early on and I figured that I have a decent size fleet I might as well try it. I mean from looking at the amount of mounts on the ships they can't be too deadly right? The one thing I didn't expect however was the drones. My god the drones... It lit my combat radar up like a christmas tree.
Spoiler
(http://i1320.photobucket.com/albums/u526/ArkAngel620/screenshot006_zps9a1debbd.png) (http://s1320.photobucket.com/user/ArkAngel620/media/screenshot006_zps9a1debbd.png.html)
The only saving grace I had was my gemni had been equiped with dual flak cannons and that barely held them off so i could attempt to retreat. None the less it didn't go so well. After watching the ensueing massacre I ended up coming here to post on the forums.
From my experience each faction is rather cool with there own neat quirks to them and are rather put togethor. I must agree with Runoved however where putting all three in a new sector is a good idea instead of just having them in corvus. I must ask though, is it possible to capture Nexus ships even though there AI? I tried a couple of times on the smaller infiltrators and each time the ship was too damaged after the boarding. So overall a great mini faction mod. Good looking sprites and great feel to fight against.