I think that people are a little hung up on the name, which indicatively, I will agree, playing cards evoke a "White, Red and Black" standard colorway to most people.
(That said, I see that you've already said you had Poker in mind, so perhaps, "GMK Poker" or "GMK Casino"?)
I do think that the colorway for the alphas is a bit much, though, I can understand from the vision why you'd choose them.
Perhaps you might consider an earlier comment about white and black (or off-white and black) to represent dice?
Or you could do a Deskmat/Mods/Novelties release? Maybe even use the green as an alt-alphas kit? (In smaller production to limit on costs)
Just some food for thought!
As far as I can tell with most feeler IC, there are some kitting tweaks that could be done. (Namely support for the second "b" from my at-a-glance look)
The novelties are banger. I like them a lot. Like a LOT. They really bring home the casino vibe and I am HERE for it.
I'm interested in seeing where this one goes! Keep it up and GLWIC!