For completeness' sake, even though we're chatting about it on Plurk, I would welcome you back to the Voidtrain! I'm 90% sure Wormmon is small enough to join Ken, presuming he isn't appable himself - which is always hard with Digimon, but I should think it'd pass? - and there's enough kids on the train these days to keep him company. I don't know that you'd get the canon update, though, not without having to reset him, IIRC. also I'm scared what color he'd wind up as