I can't speak for any server other than Meneldor. Not much is offered for sale on Meneldor. I do not believe much in the way of demand. There is no point in this functionality because you wouldn't sell enough goods to make it worth the fees. You going to meet resistance from people like me that prefer a middle earth wide system with multiple access points that is provided by the auction hall.
Remember Turbine sells Auction Hall slots of Turbine Points. If we get this functionality we are going to have to buy our vendor slot from the Lotro Market. 1,000 - 2,000 whatever points. Plus there will be functionality similar to the auction hall for in game gold costs. Turbine not going to allow the server performance degraded via hundreds of player shops. There will be a fee - maybe weekly to keep your store open.
The only possible purpose would be to save some silver cost on very high priced goods like the 350 - 450 gold Horse Lords one shot recipe that was recently on the Meneldor auction hall. It would not do anything for me. I typically do not sell expensive items. My last sales were Agates and some recipes - total value of this package was 200 silvers.
What I would like to see is a combined auction hall. All items being sold on all servers given the utilization of the Meneldor auction hall is so low.
Unless stated otherwise, all content in this post is My Personal Opinion.