aberratio ictus: If you're on the PC, try out Balanced Magic. It adjusts the perks for Alteration so the main line of them boosts the duration of Alteration spells, as well as lowering magicka costs, and replaces mage armor with both a permanent version and Less is more which reduces spell costs across the board.

It also alters the Destruction tree to improve damage as you go up the Novice>Master line. Much improved scaling.

Also, Midas Magic 007b seems to solve the crash problem, but ensure that it's the last thing loaded in the order for maximum stability. I was having issues with the Midden and moving it to the last spot in the order corrected them.

Of course, the CTD's all seem to happen randomly now, but I just save a lot and live with it.

A backstab wizard with Ebonyflesh is quite nasty. Even if you don't kill them on the first blow you can drop invisible without dying. Midas Magic is useful since it brings back Bound Dagger. (And adds a burning death laser just for fun. Mad love for the burning death laser.)