I uninstalled the mod and all horses are still essential, can this be undone? Because it honestly bugs me.

Can I summon an unlimited amount of armored horses for my followers to use? (I have other mods that let them use horses automatically)

as for crashing try setting the video settings to the minimum first sometimes when you add mods you have to lower your video settings,next you have to choose which mods are most important to you,you can usually only use one type of body or hair mod,mods that edit the same files can cause conflicts that cause the game to crash

If you are using mods you should have more than one copy of SAteamm and Skyrim that way if you have a problem you can just delete the Bad one and copy to good one to the were the bad one was,I have C\programfiles\steam ,D\\programfiles\steam and E\\programfiles\steam,I actually have 7 copies or Steam and skyrim,especially makes testing mods alot easier with multiple copies

Katherine the Nordic Huntress sound pretty cool,how about an overpower Auriels Bow,i am actually working on some big mods right now,I get lost in mods sometimes,sorryHave you see my New mod,"Book 1 - The Land of Dragons - The New World" I have big plans for the New World I found it in Nexus Mod Resources,Breti spent over 3 years making the World,It is a huge World about half the size of Skyrim,it is also a very high quality world,a beautiful forest world,