I think a board like that would be nearly impossible to run.
Think about it, who is going to use it? All kinds of people here seem to want domains a million years old, so few people will look in the "less than a year" board. With few buyers, people won't create threads in the board and use the boards they're using now anyway.
To make it mandatory would be hard, too. The mods would have to run a whois on every domain posted in the auctions, make offer, and fixed price boards - which isn't really feasible.