I would like to describe my perception of Grafu from the eyes of a melee dps. I manage to interrupt most of the ALWAYS lethal casts(mostly 1 hit sometime 2hit depends of buffs but - not only 1 mob casting) , sometimes you miss a mob because you still don't see the cast bars under the life bar. Sometimes you die because you get a stun and can't interrupt. Some casts cannot be interrupted 100% of the time. I ask myself every time why only melee dps get such an ass-kicking. Fears,Stun,Deadly Aoes. If you play champion now it gets even worse because you can interrupt every 3 seconds (if you hit them all) but the positioning must always be perfect. I always have the feeling (which is confirmed) that ranged dps only have a fraction of the mechanics they actually have no deadly aoes and only a few stuns and mostly they can just hit stupidly. What do you have against melee dps that you have to punish them like that?
I would suggest adding mechanics that are also deadly for range dps and stun as soon as they don't get close or don't interrupt the stun can come without notice like in meleerange. it makes it harder but fairer
Teach your mates to play safety and help you with control