Some of those are good points, others i dont like.
PM only. -I hate this option on the HBC bst forums. Sometimes on here you get a couple weird replies, but its a forum! its communication, and so others can see whats going on. Its great for seeing answers to questions others have asked, and learning and reading other things you may have over looked.its also good to see level of interest in an item your interested in and how quick you might need to be if you want it.
Price and location must be part of the listing. Yes, good idea, and they should be already
Lister can bump or re-list weekly - this taken out of the question with replies part of the post. if there have been no replies for 1+ week, then bump weekly at most.
No multiple ads for the same item. - yes agree (already is like this on the 99%)
Delete when sold. - No, post that it is sold sure, but its nice to see a history of what has been for sale and the different items that have come up on the forum. especially when your buying an item that someone had listed before (not the exact same item but a same model for example) to compare prices, condition, etc.
Auto delete after 90 days. - no, see above. its nice to see a history of items
And an option to report an ad - that already exists. see the exclamation mark in the bottom left corner of any post on the forum!