That Telvanni wizard build looks like fun I might have to try it to.
I'm working on a shield mage build. Which is basically a battlemage, but played more defensively.
Main skils are: Heavy armor, Destruction, and Block
Secondary: Smithing, Enchanting, and Restoration.
The way I play this to let the enemy come to you while hitting them with what ever destruction spell you want. When they get close shield bash to stun them. Rinse and repeat. Retreat and heal when needed.
I haven’t gotten this build to a high level yet but when I get magika pool high enough I plan on using rune spells.