Well regarding moving eyes we do know that engines who are too small or there's no room (Beau) can still be made. We just need to look at the NG line for that or even N scale or G Scale Winston. Yeah his design isn't a typical but other modeling companies have managed it and with Stephen there's the added room of his smoke box which the actual rocket just has the funnel. Sales wise like every engine when done with care they sell brilliantly. One of the main reasons I keep coming back to Stephen is the fact the Open Coach is being made, which yeah it was shown in season 16 but its notably connected to Ulfstead and Stephen pulling his Tours around the castle. As always time will tell. I've made my case and I've done the research and tried to carry out some Polling so it's not just me saying "I'd like Stephen".