Mini-buff for Janna: Using Zephyr no longer removes Janna's "ignore unit collision" effect
Using Zephyr to slow someone already really hurts Janna by sacrificing her speed, but it becomes obnoxious when that also includes you suddenly becoming creepblocked. That is beyond frustrating; that is infuriating.
Yes, Janna presently is #1 on Champion.GG among the Supports, but that's mainly because Ashe is so good right now. I don't think a change like this would make Janna broken. It'd just remove a huge painintheass that presently just compounds her MS payment unnecessarily.
If nothing else, this should at least be considered for something that could help Janna out in the future if she's ever underplayed or whatnot.