Stop pushing Karma/Lux/Morgana or any other mage into support.
Mages are supposed to be played in mid not support. You killed AP 
with the ridiculous AP ratio nerf on her Q and mid 
is only played as a counter pick after her W nerf. Now these 
changes on PBE will push her into support even more. Stop with your assassin/fighter bias and bring back mages into mid lane.
who were actually designed as midlaners and you might have a stronger case.
The ones you are complaining about were supposed to always be supportive in nature, so it's fine if they go there, but I also think shouldn't be forced to only support (there I agree).