First i wanted to say...first impressions are everything right? WRONG!! When i tried beta i "knew" i would not play this game live.. im not sure if the tutorial portion turned me off..or what it was.. but i thought the game was bad! Not sure why. Well, after reading some reviews and watching some videos.. i decided to give it a try. And im glad i did.. i was going stir crazy waiting for Wildstar ( which is the best MMO ever! IMO ) I'm having a damn good time playing ESO.. but i also wish i could box it! It will keep me very busy until WIldstar goes live.
The only thing I have thought about, that might be a good use of a second account is for trading crafted goods from one account to another. When you craft, you can extract rare crafting mats ( used to upgrade items in quality ), along with normal mats ( ie iron bars..etc.. ) by dismantling items you make..HOWEVER>> you get less mats/results from dismantling items YOU craft. I think that means any items crafted on your account. SO if you have two crafters, on separate accounts, you can trade items between accounts to maximize extraction.
Im not 100% sure about not being able to accomplish this with alts on a single account, but for ease of use, two accounts would be easier i think.