I wonder if a "woot" style service could work. If 10K like-minded consumers made a group-buy every 2-3 years, a high-end panel vendor might be willing to provision a new SKU with a few firmware tweaks.
I'm not sure how true any of that is, but in any case Costco still has a reputation as a place where it's easy to return a TV, and they pay attention to the stated reason for return.