Spells That Have Cast Time Should Reduced By Skill's Rank

Yes plz, I don't wanna self root myself for eternity just to land a slow on someone (provided I even land the skillshot)

Either that or un-nerf some of them (on a case by case basis maybe?). Fiddles' Ult for example has a range that's about 1/3 of the cast range. You can just make it over about half of the walls, after the 3 second root to cast it, and it only last for 1.5-2 secs anyway. Compare that to Swain's instant cast life-draining ult that last's 4+ seconds and which is really worse?