And the other way ... if you have a "niche" apps with less than 10 users your apps will never reach extras ...

I think each app in extras should require 5000 votes ... and any negative vote block promotion. So only perfect applications will reach extras ... and we will not have any problems anymore ... as we will not have any apps

EDIT : And everyone didn't agree with some rules setted in QA ... there is community votes ... nothing.