having worked on a number of iOS apps (everywhere from 5k loc to 80k loc), i have literally never seen anyone work any other way -- you just put `[self renderVi

having worked on a number of iOS apps (everywhere from 5k loc to 80k loc), i have literally never seen anyone work any other way -- you just put `[self renderView:model]` on your controllers and it's a pure function which sets up the state such that the system `layoutSubviews` call is also pure function. i havent seen that "build a new version of the previous screen" tho, at least not the way you describe -- most of the time you just rely on `viewWillAppear` calling `renderView:model`, and `viewWillAppear` gets called on `popViewController` by default.