Windwall
So I was playing a little Nami the other day, and a point in the game came where all 5 enemy champs were trapped under bot outer turret with about half hp or less. So now was my time to shine and set the engage for my team to go in and finish them off.
I'd waited the 100 seconds for my ult's cooldown and sent it down lane, sure to catch at least 3 of them (and maybe even get a kill on their limping support).
And that's when the windwall went up.
I had no idea windwall could catch Nami ult. (Because why would wind block a tsunami?) So I looked it up on the wiki and found the complete list. Why are all these things defined as "projectiles" anyway?
And how is this fair for a 22-second cooldown ability to block pretty much everything that isn't literally in your face? I have to wait 120/110/100 seconds without CDR runes or items. That's enough time for a Yasuo to use his W 5 times within that margin. It negates so many ults and doesn't have to be "saved" that much. Plus he's a high mobility champ and doesn't need an extra ability to help him dodge at all. He has so much utility for a mid/top lane damage dealer that it makes Janna look mediocre. (He doesn't even have to wind up his tornado, unlike Janna.)
I guarantee almost all Yasuo rage threads would stop if this ability was given a longer cooldown. It's pretty disgusting and half the time it's why Yasuo players BM, because they just blocked 3 out of 5 of your team's ults with a single W and they know that tilts you hard.