I don't think the deck becomes unplayable without Dark Hole, but you need it to steal wins from stronger decks. T.G. and Shiranui boards are very hard to break without Dark Hole, so I'd recommend to run 3. You can run backrow such as Warning Point and Needle Ceiling but I don't think it would improve the deck's mid turn 1, and playing an heavier version with a bigger deck size will affect the consistency, so I think you have to choose between one of the two. Dark Hole also synergizes well with the deck overall due to Balelynx, so I think it's an useful tech that fits well in here. Regarding the Code Talker version, you trade your grindgame for a stronger endboard (Firewall and Shootingcode+Crosswipe), which is nice when you go 1st against meta decks, but it's also really frail. You have to rely on Falco to cycle your resources but it's pretty limiting. It might be more playable than this version, but I stopped using it as it didn't really fit my playstyle and I know this version better. Hope this helps

Yea even with Roar this deck got powercrept and I don't think it would be tier worthy but it could achieve something like cutting tournaments if used by a proper player. Unfortunately Yu-Gi-Oh in generale but mostly Duel Links is a game where the "deck issue" hits very hard. I hope they just unnerf old decks such as this one, mekks, cydra (💀) etc., they fkcin destroyed speedroid and removed every card from the list the week after but those decks are still on the list for no reason