Sounds like sour grapes on your part, considering which public world you're in and where it ranks under my proposed criteria.
You then counter with your own proposal which sets no hard threshholds, just "let 75% of them go private" based on a poorly thought out formula I assume that you're hoping your world falls in there somewhere. Then, when told that a suggestion that would allow so many of them would not likely pass muster with ADMIN, you back off and say "Make 'em all stay public".
Which comes across as a bit spiteful on your part: "If my world can't go public, then screw everybody else". You're just taking your ball and going home.