Giving his Passive a long cooldown and have make AP reduce the cooldown. It would majorly nerf his ability to permanently slow people and would reduce his dps if he didn't build AP.
For Example 10 second base cooldown reduced by 3 seconds for every 200 AP he builds capped at a 3 second cooldown.
The problem with bruiser Ekko is the fact that Riot kept buffing AP Ekko. In the bruiser/Tank Ekko on your first back get a Dark Seal, from there You just hold onto that and when you get kills it gives you more ap. What they need to do is take off a frick ton of his AP scalings. Unfortunately Ekko suffers from the unbalanceable syndrome. He will either be a god tier pick who you can't kill, or he will be useless.
To be honest, I think bruiser Ekko fits his theme better than a mage/AP user. I mean he is supposed to be a street rat from Zaun. Breaking shit with a baseball bat, or in this case a clock hand. Using his devices to augment himself, it's something that should do exactly that. Augment him breaking shit with his baseclock hand-bat. We already have an AP mage with time powers, see Zilean pg. 32.
I don't know. I agree that it's too strong at the moment, but I think Riot should be embracing it instead of fighting it. Just because someone has flashy abilities doesn't mean they have to be a mage. And he'd probably be easier to balance that way too.
