In building custom detail pages, I often start from scratch due to the highly custom set of fields and related records.
As a best practice I use the url parameter for all models so that they all load in one pass. As such, being able to click one button to add one condition to all models in one fell swoop would be great.
Even better still would be that the Page Builder could interpret the parent/child relationship between the detail model and related records models and set the appropriate field for each of the related models.
I know, I know … edge case request. Just like these small pieces of super user enhancements. 
