Yeah, market has far too few rules. I mean, they only have like 150 or so. We definitely need more regulation so every single micro part of any transaction has its exact minor paragraph and nothing can go wrong ever.
Dude, this is a game. Don't turn this into a bureaucracy. If he does not show up, contact some marketsquad guy and he will figure it out for you.
Adding another rule for something that is already covered by common sense is not necessary, particularly because A) nobody cares about the rules in the first place and B) even if it was introduced, nothing much would change. Nobody would read it. Staff would handle things the same way as they are doing it now.
The only difference this would make is that common sense got replaced by yet another paragraph to make things even less interesting.