Firstly, the Admin Team have not decided exactly how this new section will work, we have more important things to deal with both on and off the forum. My current priority is getting the shop fixed for example.
So the following is me speaking personally, not as an Admin.
Initially, a few select members would be given a new status of Recommended Supplier, which would enable them to start a single thread in that section, descibing services and capabilities. Any member would be able to respond to that thread with their experience of that service received. The Recommended Seller would not be able to add to his post or reply to queries, and members would only be allowed to post their experiences. This is to stop stealth bumping. Recommended Sellers not living up to our very high expectations would have that status revoked, and their thread in that section nuked.
The criteria as to who gets the Recommended Seller status would have to be defined (though not necessarily published). It would certainly be based on satisfaction levels, but also things like what they can do extra for OOF members, be it discounts or better capabilities than available elsewhere, or both

. This is bound to be controversial decisions, and some sellers may get upset. Those that are given the status, then have it removed due to apparently not meeting our high expectations, I guess they are going to end up being pretty upset.
Whilst I feel it will be incredibly useful to members, this whole section is likely to be a headache for the Mods covering it, which is why I certainly haven't been in any hurry to get it up and running, and ultimately, it may get nuked.