I wouldn't hold out hope for the "Eyes of Blue" cards. Konami is yet to include a single Tuner in Duel Links, even though several, such as Dragon Buster Destruction Sword, Genex Ally Chemistrer and Jurrac Aeolo would have been more than warranted and acceptable here.
Konami getting desperate. I mean they added Espa Roba. I wouldn't put it past them to add yami Joey or Tristan might as well start adding the randoms that were walking around in the shows and call them random duelest that walked in the show. Give em an event and shitty card rewards. They do for all the new events anyways.
Has anyone actually found any evidence that this "character", shall we say, will be added to the game? From what I've seen, some guy just speculated about Yami Joey beimg the October roaming duelist and that doesn't exactly warrant a whole page about the guy.
There was a post somewhere in one of the threads (I think it was one of the "upcoming months" threads) that had a duelist list with his name on it that could have possibly been for the game code. I don't know if it was real, though.
I have no idea where it even was on here. I think it got buried a few months ago. It looked like the same kind of text list that they use in the Leaked information page, though. And it was weird, because it also listed the Paradox Bros. as separate characters.
Instead "yami joey" why not normal marik, or normal bakura, or shadi, or those non canon characters like noah kaiba or dartz?.
At this point, I wouldn't be surprised if Yami Joey was just someone you have to duel for the Battle City event, and maybe not a playable character. I would also prefer the other characters you mentioned, though.