Certainly the matches are too long and will be forced to change
somehow, someday. So much has been suggested and we are nowhere.
Two common sense, brief observations:
First, play a super tiebreaker for third sets. Period. Second, count a
win in singles two points and a win in doubles one point. You have the
same system but not the “throwaway” or “stack” or uncounted doubles
match. This system (two points, one point) isn’t foolproof or “stack proof”
but it stops a 9–8 match of beauty that ends in a 13–11 tiebreaker and
counts for absolutely nothing. Believe me, two points; one point will
drastically seal this stacking loophole.