You weapon runs out of charge and you have to recharge it with a soul gem....and now that your only choice, you cant even get an expensive NPC to do it...only find soul gems. This means that any character that wants to use an enchanted weapon (aka, all characters) needs to then carry around soul gems, or as I call them 'batteries'.
Seriously, you give us regenerating health, but not regenerating enchantments? what the hell? Why couldn't you go back to the Morrowind style, where they slowly recharged over a number of days, meaning that if you wanted full power constantly you could go the soul gem batteries route, but if you jsut wanted a causal blade you didn't have to worry about it.
This aspect is what put me off enchanted weapons in Oblivion (Until the Duskfang/Dawnfang combo arrived) and its completely put me off enchanted weapons in Skyrim. I want to be out exploring and killing bandits...not searching shops for soul gems and refilling my weapon's enchantments.
PS: Yes I know about the perk in the enchanting tree that refines 5% when you kill a creature....too bad you'd use that amount just ot kill some of the creatures....and half the time you are fighting NPCs anyway. Not to meantion it takes quite a few important perk point to get that perk, so I dont want to do it with every character....despite every character needing enchanted weapons.