I want to be clear...
I'm not trying to sound like a Destruction cheerleader. TBH, I think it sux skeever tail, for the most part. The lack of spellcrafting was a big kick in the magical dirty bags.
However, when words like impossible get thrown around, we need to look at the numbers a little closer. Then the application of support skills. As a package, Destruction is rather viable.
The thing is, to focus on leveling Destruction first. A character that hits a skill of 100 before level 20 or so, is a bad MOFO. It's when a player continues to level a character that it does get away from them without a strong support.
EDIT : Just a note... I'm sorry. I cannot respectfully respond directly to a post that uses the word... toon.