I don’t know the answer to any of those questions. I know they made a campaign setting, so they have some design chops. Whether that would translate to a full game, I don’t know. They have a great relationship with Green Ronin and various designers who published the campaign setting.
I don’t even know if they’d *want* to do something like that. All I really know for sure is that if they did, I’d buy it.
I don't partake of Critical Role. I know it is very popular, but I don't really feel compelled to watch other people playing games. And I'm a big fan of Star Trek and Wars, but I don't buy their RPGs just 'cause they are associated with a property I like.
I look at what you said there and think... you don't know who writes it, or what genre it is in, or what kind of rules they use - all you have is, essentially, a marketing connection to Critical Role, and that will bring you to buy it? I don't buy any game on so little information, so I don't understand the enthusiasm.