Fine, nerf Sona, she is a little on the strong side...
But why leave that Leona and Janna as is and give Heimer a buff that he doesn't need? Oh, i see..Patch 4.20 Yeah smoke another one, that'll make it right! lol!
Edit: I did not put Thresh into that list because even though he has an overloaded kit, he is ok to play against if you position yourself well. if you get hooked you are screwed, but at least there are no endless stuns, no endless tornadoes and no endless turrets...