Would be useful to be able to track versions of my Pro projects over time. Ideally, via git locally, or even with a repository such as github, gitlab, etc.
An idealized workflow would check in my .aprx to git and I'd commit changes as the project evolves via an integrated interface (much like IDEs use to make version control painless). This would permit me to version projects (rather than saving ProjectName_old, ProjectName_older, ProjectName_whatever in the filesystem) in a proper versioning system, with all the facility that provides. Could be implemented for maps, layouts, model-builder workflows, jupyter notebooks, or the whole project.