Turaga Nuva, me no think so.
I say that because GregF pretty much confirmed that there would be no Turaga Nuva.
It would be cool to have Tohunga Nuva though, check out my username, lol!
The villagers of the island were not created to be exposed to the protodermis, it is true that it's the lifesource of Mata-Nui but it would be disasterous if weak Turaga/Tohunga were dipped in it.
P.S This really belongs in theories.