I've considered that before, but it raises several questions:
- Although bumps every 24 hours are allowed by the unofficial rules, should they be allowed? Bump posts are worthless on their own, and their existence is really a dirty hack. The modified bumping system on some boards is a better model, but doesn't fit all boards.
Although I agree to everything you said in your post, I differ on this one. Bumping is backbone of every forum especially when we have sections like 'Services'.
No question that bumping was manipulatively used in sections like 'Bounties', 'Tokens', etc. but in threads like 'Services' or 'Goods' where everyone is trying to buy/sell something valuable (or maybe not), '24 hours per bump' is fair rule and promotes equality.