If being whitelisted reduces the 4 second waiting between reports, can I get in on this too?
after I rank up to Full Member I got somehow removed from the whitelist.
Ranking up clears the whitelist for some reason.
If you are whitelisted there is no cool down time anymore, or at least I couldn't hit it. This could be a good perk for those who have more than 5000 good reports

Yeah I'll probably rank up to Legendary in couple of months (maybe half an year) and then I'll loose it again if I get whitelisted now of course.