Everythng he has is unique.
* Unique passive, unique Q spell that takes skill, unique playstyle
* Fun to play against and with, is not broken, has a healthly kit, can be played as a healthly support, has a long range ultimate that can be stopped with CC, etc.
He is one of those champions that if it's touched, he's completely destroyed. I have personally never seen anyone complain about him being weak, too strong, not picked that often, annoying, etc. Which means he's in a perfect state.
Please consider scrapping the rework and go into another mage like Syndra for a gameplay update.