I’ve started building reports several times before realizing I don’t have all of the lookups I need to get all of the data I need, and have to go rebuild it in Data Designer. It’d be really cool if there was an option instead of saving a report to convert it to a new data design & have the system transition the report fields & criteria into your first dataset so you don’t lose your progress.

Definitely a nice-to-have and not a hard requirement, but it’d be great admin functionality.