@Riot, can we please get a lot of transparency with the Immobile Mages (particularly Vel) update?
As well as a lot of respect toward the objections and alternate ideas and opinions coming from as a polar opposite to how you treated the Juggernaut reworks?
On release, Skarner was broken (he's now pretty trash tier), Morderkaiser was broken (he's now pretty trash tier). Darius and Garen came out on the strong side but are relatively balanced nowadays. So from what was meant to be some revolutionary patch for the Juggernaut class, you ended up with a 50% success rate. Not exactly something to be proud of.
You killed a lot of what was unique about Skarner and Morde and compensated for it with toxic, broken gimmicks which you were later forced to heavily tone down. You could say the same about Quinn except the was re-release pretty 'meh', then broken, then nerfed again a patch later back into 'meh' tier. At the cost of her entire Valor kit.
Please don't have it in your heads at any point during any of the tweaks or reworks for Immobile Mages that you've reached the point of no return. Even if it's made it to PBE. If you turn, for example, Vel'Koz or Anivia into generic mages, be prepared for community backlash asking you to revert the changes and either come up with something different, or leave them alone.