I have to commend Riot making the keystones more mage friendly
Before, mages, didn't have much to pick from when compared to AD/auto attacking champs. They only really had Comet, Aery, and Electrocute. Some very unique champs were okay with phase rush and fleet foot, but overall, the options felt very limited when compared to AD.
But after waiting a whole season, riot made it so that mages can now also pick Conqueror and Dark Harvest. I love it and applaud riot for it. It shows they are really listening.
Now we just have to wait till season 10 for them to fix the sorcery tree and remove all the speed buff runes.