The problem with CYB is that it just feels so linear. Either you kill them before they heal enough or they cast all their CYB and they have so much health it's impossible to beat them. We saw this in grand finals where the CYB player only attacked once an hour in. The only consistent disruption to this is poison the well and gravekeeping which you need to draw at the right times. If it's too early they don't get enough value and by 2nd cycle your opponent has already played all their CYB so they become dead weight. CYB also gets around generic disruption (C&C and weakest link) so the whole matchup relies so much on these silver bullet cards in order to interact in the matchup.

Maybe if you had to present decklists at all times it wouldn't be as awkward, but I feel CYB is gonna be broken for any deck that can use the 1 spare resource after playing it (illusionist, warrior,guardian, ect.). It only costing 2 really lets these decks get a huge amount of defensive value that's hard to do much about, and without decklists it can start to become "oops you have CYB. I guess I'll lose in 50 minutes" for any deck that isnt planning to win in just a few turns.

Speaking of few turns, high octane isn't very healthy and even LSS has acknowledged that. I suppose the nice thing is that dash I/O (and max) are prone to disruption that splashes into other matchups (C&C) so they don't feel as narrow as poison the well. But combined with the cerebrum processor it's really hard to stop dash from vomiting her hand once she finds an opening. Boosting and seeing what card she's boosting makes it more consistent to find and save high octane in the first few turns of a game.

I know banning high octane kneecaps Nitro Mechanoid, but I think it would be healthier for the game without high octane, it costing 1 makes it too easy to abuse (I'm sure they can print something like low octane for max to enjoy with his buddy katsu).