How about a parameter where you can compensate for the blob size?
My only issue about this suggestion is "What would be changed by such an option?"
Negative retraction, coasting, wipe, etc...these are all actual changes to something.....the amount of filament pushed into the print head at a particular point in the print process, mainly.....but Compensate for blob size? All of the ooze control parameters have some form of effect on blob size.
A user guide that explains what the existing parameters do both in terms of cause and effect is probably what is needed. An understanding of what changing each parameter actually does and when...and why you would want this change to happen at that point on your printer....is all that's needed. And of course a small amount of patience to "tune" the slicer to your own personal printer and the materials you use.