I wish Bethesda had added in enemies that fought by horseback in with patch 1.6...imagine having Imperial/Stormcloak horseman charging at you in the middle of a battle or having a bandit ride out of a fort to meet you. Epic.
But I'm fine with how Bethesda handled named and ordinary horses otherwise.
I'm not happy with it, but that's because it's such a far cry from what Rockstar achieved with Red Dead Redemption. That set the standard for horses in games for me, and Skyrim's horses can barely see Rockstar's, let alone keep up with them.
I also think mounted combat is flawed right now, considering a lack of first person (especially for archery), being unable to use magic, bound weapons, staffs, etc, and the fact that there are no mounted enemies to take on all drag it down in my eyes.
Also, I want to be able to name my horses. Same with the stray dogs I keep bringing home, and the weapons and armor I'm forging. I don't want to have to enchant something just to be able to name it, especially because enchanted weapons are so hideous to look at.