What a shame, I'd expect the arrival of horses in ck2, to bring some activity but oh well.
Anyways, I think this might interest some of you, nanomaster Empress Rainbow Dash the Glorious, honored is she, a user from Reddit, conquered the (known) world as a horse, probably killing millions of humans in the process and establishing an equine empire.
I have the links to some of the threads:
https://www.reddit.com/r/CrusaderKings/comments/4mo3rd/from_norse_to_horse_20_how_a_horse_exterminated/
https://www.reddit.com/r/CrusaderKings/comments/4mii6d/after_three_long_months_ive_completed_my_final/