Oblivion? How about Morrowind!
Levitation
(spell crafting)
(Morrowind style enchanting)
Could you elaborate what you mean with morrowind style enchanting? The chance to fail? The "Spell effect" on boots, meaning all the actual magic skills are useless since a master enchanter can cast everything? Or perhaps the regenerative charge? I for myself would not want the "activation" type enchantments. It was hilarious to create a shield that let me spam healing spells for free... But that's just as broken as a mechanic can be. The chance to fail was just a boringly easy step you could bypass to create god-like enchanting at level 1, by constantly reloading until you succeeded.
I would, however, have wanted regenerating charges. As well as quite a few extra effects to enchanting.. It's quite boring in skyrim to just have fortify skill and fortify helath/stamina/magicka enchantments..