New Data Model - Should I Create a New Project?

Hey! I have a project with a dataset I've been using for some time. I'm going to make some changes to the data model. Does it make sense to create a new dataset, or does it make more sense to create a new project? There are users consuming data for the original dataset, and I'm worried about breaking stuff when developing the new data model.

Probably a better to create a new dataset and then migrate the data over (export then import) and then eventually just switch over to the new dataset when ready.