@Maelkjar; you should watch Cozzano's vids again... still looks much slower than now in my opinion.
Regarding CCs i agree with you, i think sprint revamp completely destroyed the previous balance. Not sure if it's better now than back then, we just got use to it.
Combo skipping wise, i liked it because getting rooted for 1/2 sec after each combo denied you the possibility to fight against a more numerous team. But i prefer the concept we have now where dealing damage is a risk you take. You have to chose between movement and damage. Rather than having it all. Sometimes you can/have to finish your combo, sometimes you need to move to avoid damage. It's coherent with mage gameplay