What if ALL melees had the morde W passive where they don't get xp penalties for farming?
Because all of the melee champs either go top/jun/mid or support, it's not going to affect the meta too much and even in the support role, you are not going to be stealing farm apart from to proc shield. And in team grouping stages, the ranged champs always have priority over the wave with their range anyway.
It will just push those who are xp reliant to have an incentive to go in a duo lane bot (can't think of examples from the top of my head) but not by much. Just a little nudge in freeing up that botlane adc + support combo a bit more.
, or attach that passive to cull itself for melee users. Morde taking it would stack with his own increase of course. Don't make it a universal mechanic though.