That is sort of my point. The world building is interesting, even though it's (from what I can tell) more playerdriven (which isn't the part that I think can become problematic) and as such less coherent (which is the concerning part) than when it came all just from Adam's mind (though I totally see why he doesn't want that all the time). But I'm really hardpressed to say if I like any of JP's characters for example more than the others.
As an example: With the Aasimar there was potential for some nice dynamic - Raziel as the fallen/dangerous person could have been watched over by Azrael and Volnach, which has been touched on during character creation, but I didn't feel like there was much roleplay put into that, most of it was Raziel-internal. In my eyes there was a prime opportunity for Azrael to actively look for faults so he can kill him (and along the way get softened up a bit), while Volnach wants to redeem Raziel and bring him back to the Fountain. Now, that didn't happen (at least not to the degree I would have liked) and the dice were not with them but I'm not sad about the characters being dead, just that the opportunity has not been seized.
Gale has a similar interesting potential and I'm looking forward how Azrael is going to turn out, but I'm still in the position of carelessness. If they die next session, I'll shrug and instantly move on, looking forward to the next character. [But the other end of the spectrum is also very annoying to me, for the longest part Critical Role was getting stale to me for that reason]
@TheDesec you are also right in that there is lots of past material, but it's still very different to actually be there and see how it evolves than knowing that show has come to a close already. That's the difference between twitch and TV, here you can actually influence story points (GM allowing) and introduce seeds for new plots