I understand that the ability to be able to replay clips with new settings is difficult.
Then how about ability to manually review clips, mark them as Positive and Negative.
Then be able to pull a CSV on Positive/Negative-marked statistics like Min and Max pixel diff, Alarm pixels, Filter pixels, etc. more or less the same output as the existing Stats page gives, but in a spreadsheet friendly format.
Wouldn't that give some information on how to improve filters?