Looking out for the stolen stable is one thing, but alternatively I would think collectors on Retrobike and for example mtb-news, iv-mtb should be able to create a pool of stuff with the aim that relatively easy can be started with building a new collection that will help forget the old one - a bit. Everyone feels with Uli. Don't forget there are many collectors with dozens or even hundreds of bikes of who I would think could do with 1 less. Of course there need to be the abbility (insurance money perhaps) and willingness with Uli to take off with a new collection, as the action will be more successfull when people simply get fair money instead of having to give it away for free.
Maybe this is not the primary focus yet and all effort is allocated to getting the Serotta, WTB, Yetis and so on back. When ready for a two track approach I think there may be people open to the concept.