I love the idea of a burned out mage. Or rather, a burning out. I don't need my characters to be statistically optimized(gasp! Blasphemy!). I much prefer interesting characters to a perfect pile of numbers. And burned out mages to me are very interesting. One of my favorite current characters is a Snake Street Shaman with one cyber-eye and a lower cyber-arm. With no statistical edge, no STR or AGL enhancements, no Wired I to give him a boost. He had to replace them after a traumatic injury. Lost the point of Magic, and is now on the path to burning out. And he's FUN to play! I know, right? Fun to play even if he's not the most powerful, perfectly built character possible! Sorry, I have issues.
On the other side of the spectrum, I absolutely loathe cybered adepts. Hate them to my very core. I guess it depends on why you add 'ware to magic. If you do it to get the most efficient statistical edge, then to me that's not fun, that's numbers gaming; but if you do it make an interesting internal character conflict, that IS fun. To each their own, I guess.