I have a 28 Destro mage who using the spells from Midas, particularly the meteor spells and she just steam rolls anything via meteor spam. I'd like a bit more of a challenge. Any ideas and info would be greatly appreciated.
How about not using that mod!? With the normal destruction spells you will not be steamrolling I can tell you that.

I have a pure destruction mage and I was never over powerfull untill I got the three master spells and eaven then it was kinda tricky cuz they take so long to charge up.