For certain goals like "Keep my weekly restaurant spending below $150", forgetting to make entries is as good as staying below the line.

To prevent accidental or weasely omissions, it would be very useful to specify that data must be entered every X days or somesuch. Failing to do so would cause an emergency day and then failure if data wasn't entered (even if the data was just 0 -- the point is that I actually made the effort to record something)

This would also be useful for weight loss goals.

Currently, I can simulate this facility by creating a co-goal of "Enter spending data 6 times per week" and check it off at the same time. This is a hassle, though, and would also clutter up my deck of goals.