It would be very helpful to have a way to see on a single screen what things are set differently between two plans. Ideally, this would include all possible sorts of differences: milestones, accounts, income, expenses, settings, etc.

This would be very helpful to double check that the only differences between plans are intentional. That way, when you’re maintaining a few different plans and make changes to one, you can double check that you made the same changes to all of them.

It would also be helpful for when you make an alternate plan and come back a few months later and can’t remember exactly what you changed.