I've seen a  few posts about this. As we know the steam workshop will not be ready for release but players wanting to play on the largest map will need far more ai factions then included with the base game. The 8 base factions will only be enough for up to Huge maps in my opinion. In my games, each AI only gets about 10 planets before the colonization phase is over. I'm going to start this with my zip file. It includes the Angry Army Faction SD included as well as a custom federation faction. It's not fully fleshed out but it gets the point across. 

https://dl.dropboxusercontent.com/u/58126813/Factions.zip My personal folder. I'm going to combine all the below entries into this one (eventually)

https://dl.dropboxusercontent.com/u/58126813/Faction%20Contest%20File.zip The contest winners + Angry Joe

I'm hoping that we can get at least 128 factions so at release people can play games this big if they choose. I challenge SD to get the pick X random factions button created before release. I wouldn't worry too much about quality I'm sure the mod community can make contest worthy material once the workshop releases. 

P.S. If anyone knows a decent file share file to have the community drop in a ton of content I'm all ears. If this idea is popular I'm willing to moderate or help moderate submissions if desired. 

Notes:

Version 0.95.5.0

Loading the faction file. If no crashes then it's marked as OK. If anyone notices anything else feel free to comment below

Cladjinn - OK

Favixi - OK

Jia Kuja Anomi - follow installation instructions here. https://forums.galciv3.com/464723/page/1/#3545549

The Masque Polystate - OK

Orphica Enclave - OK

Spefields Society - OK

Core Network - OK

Derpanian Clutch - OK

Galactic Simulations 3.0 - OK

Judgement of Karn - OK

The Mirrion Symphony - OK