Note: All credit regarding this information leak goes to XOF.
Among these, are cards owned by the protagonist Jaden Yuki and other prominent characters such as Aster Phoenix, Chazz Princeton, Alexis Rhodes and Bastion Misawa, meaning that they might be the first unlockable characters once GX is added. The datamine also shows the rarity of some cards and how duelists could get them.
Zane is a powerful duelist from GX series, his deck is themed around Cyber Dragon and it's other forms and fusions, his deck then centered around both Cyber Dragon and Cyberdark later on in the series.
Here's the first thing wrong with this
3 of those cards are character level up / duel reward cards already so they're not gonna come in a box and second this is for into no offense but spark an is the same way and bladedge came out with wildedge and plasma vice in valiant souls but then again I'm probably just late to the punch
Light and Darkness Dragon has never appeared in the anime, used by Chazz or anyone else.
The manga are usually (ignoring the original) written late into/after the series they're based on concludes, so including cards that debut there is usually impossible. (And most characters have radically different decks in the manga, anyway, so their cards would have no reason to show up in the anime.)
Doesn't mean they CAN'T be given by characters in Duel Links, of course. It takes inspiration from every source it can, and we've had several manga cards make it into LD's cardpools in one way or another. Yugi's Union Attack, Yami Yugi's Van'Dalgyon, Syrus's Carrieroid and Akiza's Rosaria are examples of this. It's even more common with the "Super duelist" events. Bastion's is a good example.
IMO the biggest issue is the cards. So many GX anime cards are either very underpowered compared to the meta cards at that time, or are actually good but have unneeded restriction slapped on them when they are printed in real life, or printed without enough support, whether from anime or game original.
Also arc V introduced good cards, although the anime itself was moronic and lazy. yuya just "action card" everything to get out of situations. That's just lazy script writing for writers who can't be bothered coming up with original ideas for their duels.
But arc v did introduce alot of good cards/archtypes.