Keystones and balance in general

The only strong ones are in in the cunning tree. Warlords is terrible now death fire never really did that much damage but I can see why they are afraid to buff it. Grasp of the undying could use a bit more % health but at the same time Mundo would abuse it. I think that there are so many balance issues right now riot is afraid to Do anything huge. I have a whole bunch of balance suggestions but I know riot won't listen to me anyway :(. I want to help.