Not really a correct answer. If the software is tested very well, then why would you want me to consider joining Muse Prerelease? This would be a time consuming job with no pay correct? Not ever free Creative Cloud? Is that not so?
Trying to follow your logic here. Either you need more help to test, because testing isn't good enough or everything is just fine and new release don't harm customer's businesses. It's one or the other.
Testing isn't good enough and "very well" is a poor and incorrect description. Don't you think?
Paul Russell