When you are creating a worksheet with a calculation, it is difficult to know whether your calculation is right first time. You have to save the calculation, save the worksheet, and then refresh the record (on a new tab). If it requires an adjustment you have to open to modals to get back to the calculation and change it.
Suggestion is to be able to select a record from the settings calculation screen and visualize the result whilst you're right there - it would save time and effort when debugging issues.