I randomly found this mod by searching "time" at nexus...
Potions Restore Over Time and No Spamming
http://www.skyrim.nexusmods.com/mods/28958
...and thought to myself "instant game changer."
I mean, on any difficulty you can open your menu and gulp a dozen potions to instantly heal, because sky's the limit in Sky-rim potion allowing. Sure, you can use ASIS to let foes have potions too, but I doubt they have a potion AI routine to use them aggressively. Morrow-ver, if I were to use this mod then I predict that it would lead me reducing to Adept Difficulty, especially if my character was a 2h warrior. Oblivion allowed only a certain amount of potion use tied to alchemy skill, and mods like FCOM also thought to enhance the limitation. That's why I couldn't beat Umbra early level on default difficulty, if only I could have used 20 potions at a time like in Skyrim. Potion spam is why you can outlast, say, Karstag in his Arena.