The video is fine and dandy, but it really has nothing to do with the thread

Sure it did. It showed how the hotkey system is an epic fail, as he mainly just scrolled through the Fav list. Contrary to how you may like to see yourself, other people have valid and interesting views. You seem to be rather judgmental of others. Especially when it comes to Mages.
------------------------------------------------------------------------------------------------------
When I was on the Xbox, and limited to 2 hotkeys, I usually kept a weapon or an offensive spell in the right hand. Pending the character, this was usually a sword, or some type of Conjured weapon or Dremora. I then used the 2 hotheys to swap out the left hand. This would usually be something defensive, like Mage Armor, Invisibility, or Healing. Although, I rarely used Healing.
I guess my most used combination was, weapon - rt hand and Invisibility (1) Dead Thrall (2).
Out of 12 characters, 5 have been mages, 4 of those were Vamps and ALL were Conjurer Illusionists.
However, due to the broken and limited hotkey system, I usually just opted to scroll the Fav list. Like the gentleman that presented us with that video. Thank you. That was a great job.