It's hard for me to see how that could really work. Our little corner of the world is small enough that it's likely that nobody will bother to make truly sophisticated malware apps, but I'll bet building bulletproof auto QA is equivalent to solving the "Halting Problem".

In principle, community QA is a really great idea. Our Extras Repository is largely free of worthless fart apps and web page scrapers not because they are prohibited, but because nobody is interested enough in them to test them.