Currently creating a custom faction mod regarding C.J.Cherryh's Alliance-Union-Universe. Besides I had some ideas or requests for other factions.
Here they are to support greater diversification. 
( as a hint: old manually downloaded files should be placed C:\Users\[YOUR NAME]\Documents\my games\GalCiv3\Factions )
Alien Species 249 - faction
Asgard Council - faction
Download/Subscription:
Steam Workshop Repository
HERE you find out how to opt-in version 1.10
Have fun!
Cheers!