My mother-in-law had a lot of gorgeous dinnerware pieces, and honestly it's so hard to find someone who wants to do a precise exchange, so we had to let go of a lot of that via an estate sale. If you're not loving the current collection, you could go through a high-end reseller like Heritage Auctions to get maximum value in a sale and then use the proceeds to re-purchase. Ebay is also a possibility for getting a maximum bid. From what I've seen on the Houzz forums, posters here seem to be more focused on building plans, renovation advice, and landscaping advice. You might find better interaction on an heirloom or antiques forum elsewere.