Those are all valid concerns, but I wouldn’t make this arrangement with just anyone!
If someone showed interest in the idea, I would make sure I am familiar with them and that they have an outstanding reputation here at CAP.
I wouldn’t necessarily have to give them direct access to anything (I would do all of the work – They would more or less be a consultant).
For now, lets assume that both parties are trusted in the community and move the feedback towards that scenario rather than worrying about being blacklist.