Eh, it seems like he was involved since the beginning. So I'm not sure how you can complain if
Seath Black does continue what he started. Only possibly the renders will be done by someone else, but also there Blackheart games don't give a reason for complaints.
This game doesn't seem to tie in to the rest of the Blackheart universe, which, in this case, is a good thing in my opinion. Because this game is already complicated enough with the possibilty to see and change the future. Theoretically, this could make it extremely complex, especially when the story continues. Weaving the Blackheart universe storyline into that would make it even more complex.
I do hope this game does not become overly dark though. Blackheart games do have a "tendency" for darkness, but this game has a bit lighter feel.