I'd say its somewhat viable now, it just needs some central cards to establish it as solely a Code Talker thing.
1) A Field Spell that works on supporting the Code Talkers.
2) A Link 1 that, like Balelynx and Striker Dragon before them, searches his key Field Spell/the 1) card I mentioned and expedites the Summon of Code Talkers.
3) Maybe something besides Micro Coder that searches Cynet backrow-of course, there'll likely need to be a limit to, again, keep the Saladbois from breaking it.
4) Above all else, something to allow their plays to be either A) secure or B) able to work past disruption, because until the first Code Talker co-link and Cynet Codex is up, they're abysmal at field recovery.
Again, the reason Salamangreats (and by extension, Marincesses) are so good is because they can put out a lot with a little, Marincess being "1SeaHorse=WATERLink3.dek" and Salads, between Gazelle, Fowl, Jet, Spinny and the Sunlight Wolf, can mostly ignore attempts to snipe at the board while setting up Rage and Roar to blow apart the opponent's efforts to set up. Helps they're usin' most of the good generic Cyberse support now (hullo Limited Lady Debug.)
Code Talker.dek...has yet to get to those Levels, though I've thrown them some bones in VRAINS Vs. The World
to try to fix that. Hope this answers your question.