Firstly, I acknowledge the frustration here.
I want to explain our approach from the Designer's perspective.
One of the things that's really important for League's longevity is to have the right amount of frustration in the game. It creates a desire to learn, to try again, it creates highs and lows and texture + variety in the experience. Broadly, the Design team doesn't believe that there is so much frustration in the game currently to warrant a larger swing than what we're making.
The goal for us is not for the Designers to make the most popular changes in the game. You've all seen the "reddit knows balance threads". It's also not for Designers to broadly reduce frustration, though it can be right sometimes. I could rattle off hundreds of things people find frustrating, from dying to fed Rengar with no counterplay, to windwall, to mages bot, etc.
I know it's not going to be popular, but we believe that mages bot with reasonable levels of ebbs, flows and strengths and weaknesses adds to League's longevity.
We are still doing something about mages bot on 26.16. The thing we're not doing is removing them from viability though as we think their presence makes League better.
@Reptile9LoL Isnt Dusk & Dawn --> Nashors --> Zhonyas --> Void Staff more dmg? I feel like you dont need rageblade in this build, no? Looking at this kr varus rn