Dash / CC Priority
It's high time Riot sorted through the spaghetti code to equalize dashes so that CC stops /all/ of them, unless they are specifically intended to be "unstoppable" like
R and
R.
Tristana dashing her full distance despite being stunned milliseconds after pressing W shouldn't be a thing. Galio being knocked up during the backwards part of his dash and continuing forward anyway shouldn't be a thing.
At the very least, make CC apply its full duration after they land instead of it being wasted during their dash animation.