I would love to save a good Post Process configuration as a Preset in order to use it again in a new image.
A really good request!
Also light & environment as a quick load.
To go completely crazy:
One can swipe through different styles, when active.
Loading objects into an existing scene is a workaround, but saving and reloading in a fast and elegant way is the one term professional solution.
I could even imagine a random function, where saved post processing settings where mixed with saved light and environment settings. For finding a quick fresh look. But that is seriously secondary.
Save things first.