Please add a field option for presenting estimated time remaining for a task based on the Progress Slider (Auto or manual) of that task.

I do not want to assign estimated time for all my subtasks--I just want to manually set my estimated completion %, then have the estimated time remaining for that task to automatically update.

I tried creating a formula that uses the number set in the "progress Manual" field, however, for some reason formulas do not recognize it as a number.