Insulting another member
Belittling another member
Ridiculing another member
Derogatory comments to another member
Vulgar, obscene, or otherwise objectionable comments to another member
Questioning in an insincere manner
Deliberately annoying or irritating another member
Just my tuppence worth and the end of it for me. 
Rallim, I can't see many members disagreeing with your comments and observations. I think you've summed it up quite succinctly.
Yes, few people would disagree with the sentiments behind that list but drafting a list is only the start of the beginning in terms of moderation. Implementation and how it's executed in practice is a hundred times more difficult and likely to upset a lot of people, like happened before. If you'd been 'persecuted' like SS and me, a couple of years ago, then perhaps you'd understand.
EXAMPLE
Someone comes along and mentions a product they hope to launch.
One group of members express great hope and say they're almost certain to buy it.
It's all positive so far.
Then one or more 'wise owls' come along and express doubt.
Should those posts be deleted to 'nip problems in the bud? Yes, they could be seen as negative comments but they may well be right. Only time will tell. As long as vulgar words are avoided, I see it all as acceptable free speech and don't want to delete anything.
It would be a minefield to moderate, as if the moderator knows best (which he doesn't) and it's where previous moderators have gone wrong, and why certain other forums are such awful places.