I'm guessing they didn't add the ability to talk to people while on horseback?
I've always hated dismounting to talk to people on the road.

Mounted combat is awesome and all, but I really just want general interaction while on a horse.
I assume there are no killcams but does the decapitation perk still work?
It would be sweet to charge into a big mob swinging a battleaxe with one hand lopping off a few heads as you go while your follower and summons wade into the throng.
NPCs need mounted combat too so you can engage enemy riders while the "troops" clash.
Imagine how epic the Civil War could be with battles like that... Join the Imperial cavalry today!
NPCs with mounted combat (and more NPCs on horses?) would change combat in this game dramatically... for a proper war with the Thalmor perhaps?
I hope future DLC makes use of this or develops it somehow.
I also reckon fighting dragons while mounted could be epic... bow, plus zoom and slow perks, galloping along parallel, taking aim... man it would be epic in 1st person.