I honestly don’t get why they wouldn’t have given Douglas and Bill wider releases. They obviously had the right tooling, and they were already making them for the playsets, so why _not_ sell them individually? Or even in packs with their respective twin? ‘Cause any fan of the show would prefer to have both instead of just one.
The express coach needed to be with more engines Oliver and ducks rolling stock should be switched Douglas ans ben were released but just way after their twins