Buffing turrets will only make the problem worse...
If anything, mobility-heavy and tanky champions will only become stronger as a result of turret buffs, as they will be the only ones capable of dealing with the massively buffed turrets. Immobile champions like Brand will get shafted harder than ever.
GB doesn't know a thing about balance, you guys only look at singular aspects of the game at any given time and say "yes, turrets are weak, let's buff them" and "yes, annie/ahri/leblanc are op, let's nerf them" without paying attention to all the side effects such changes would cause.
Look at what 1 item (devourer) was capable of doing to the meta. You think changing the turrets would make for a quick and easy solution?
, which we just absolutely hate.