Zyra ult mana cost still increases with ranks

As the title says, Zyra ultimate cost increases with ranks: 100/120/140 , something left from the good old days, while most champions now days have a static cost of 100 mana at all ranks. So if any Rioter sees this please help bring the plant lady to today standards, as I remember quite a while ago Sona got this treatment (5.5*.

For the rest of us non-rioter plebs, do you guys know any other champion that has this old "ult cost increases with ranks" going for him? Any time you got screwed by being a few mana short from ult? The only other I know are Karthus (150/175/200) and recently found out Amumu (100/150/200), and while I doubt they will change Karthus as his core build consists of RoA,tear + the fact he gets a free guaranteed cast in his passive, Amumu seems in a similar position with Zyra.

EDIT: I found the patch Sona got the change - 5.5 (the patch Bard was released, damn I feel old) and it got a relevant quote "For a while we've been normalizing mana costs on ultimates, and Sona's the recipient of the next round." so I hope they still do that.

EDIT 2: After I made the post, I was curios what other champs are on the same boat, so after half an hour on lol wiki, the only others I found where Zilean (125/150/175), Vi (100/125/150) and the odd one TF (150/125/100). I would've edited this sooner, but I had to go to sleep so some/one people (Hi, The Yetii Rider) might've commented and I didn't put it in the post. Again if I missed someone please tell me, I tried to look at all champs, but I might've missed someone, also please no low CD/ammo ults, those are balanced different.