Would it be reasonable to buff Janna's Zephyr damage scaling?

Now, before you downvote, take a minute to look through my reasoning's. Janna's scaling on her Zephyr used to be really high. Once 100%, once 80%, once 60%, and now 50%. 50% AP scaling is a bit small you think? That should be the scaling for a support and she would be abused mid you say? Well, there is really no reason why you couldn't buff it.

Why? Zephyr is a very short range ability, making her risk into going in a very dangerous situation, she would have to use the ability wisely so she won't get blown up. And if she was played mid, she'd also have to play wisely, because many mid laners have ways to counter shit coming at them. So while it would do a lot of damage and slow for a big amount, she has to be smart to use it so she doesn't die.

It's cooldown. It's cooldown is 12 seconds and does not scale down with rank. That is a very high cooldown compared to other lock on abilities. Let's take a look at Nunu's iceball of cancer.

Ice Blast Cooldown: 6 / 5.5 / 5 / 4.5 / 4 70 / 75 / 80 / 85 / 90 MANA RANGE: 550 Damage: 80 / 120 / 160 / 200 / 240 (+ 90% AP) Slow:40 / 45 / 50 / 55 / 60%

Zephyr Cooldown: 12 40 / 50 / 60 / 70 / 80 MANA RANGE: 600 Damage: 60 / 115 / 170 / 225 / 280 (+ 50% AP) Slow: 24 / 28 / 32 / 36 / 40% (+ 6% per 100 AP)

As you can see, Nunu AP scaling, base slow and cooldown is much more powerful. However, you can see that Janna's Zephyr costs less mana than Nunu's Ice Blast and has a bigger range. Sure, it costs less mana but Nunu doesn't have any other high mana abilities. Janna has a 150 mana cost tornado and a 110 mana cost shield. And yes, it has bigger range, but not much bigger. Also, you may say Janna's slow scales with AP. But usually, the only AP items Janna would build are Frost Queens, Ardents, Rabadons and maybe a fully stacked Mejais. That's only like over 400 AP, meaning only 24% more slow. Yes, it beats Nunu's Ice Blast, but only be 4%. But one could also say Janna's Zephyr is better because of the passive movement speed slow, so I guess it's just preference. So while they do have different roles, they both have the same idea.

I hope you guys got my point. There are many other champions that I could compare to as well, but Nunu was the best comparison. Another comparison I could've done was Annie with a Rylais. Even though Janna is a support, I think she deserves a good scaling on her damage for her high risk and high cooldown and it really wouldn't do anything bad at all. I hope you guys agree too.