[Suggestion] Dynamic Turret Strength
Any one turret's strength could change depending on how many allied champions are within its range. (less champions under turret = stronger turret, vice versa)
This would make solo lanes a lot harder to dive, but would not let turtling compositions take complete control as turrets would be heavily de-buffed with 3-5 champs defending them. This would also provide some split-push protection while still allowing split-pushers to apply pressure, just not as detrimentally.
Thoughts?