It'd be cool to have more abilities that get lower cooldown off something other than CDR
Like kinda how Yasuo Q scales off attack speed. Imagine a tank, and they had something like Rammus or Malphite W that gave armor, and the more armor they build the lower the cooldown of that ability was. Or what if somebody had a dash that got lower cooldown based on move speed. I guess Kalista passive kind of does something like that with the dash based on AS. Not really too serious of a thread, but just imagine how op some things could be.
Like what if Braum's shield cooldown got half a second off for ever projectile it blocked.