To be honest I think this third intro is the weakest of the three volumes. The first was pretty good and the second was even better, but this feels like a step back.
I suppose they're heading for the "climax" where all this plotting, epsionage and the storylines tie together, since it has been heavily implied the Grim will invade at some point.
Monty did a lot of the directive work I think for some RvB seasons, and then carried it over to his creation of RWBY. They're probably half-way between what he wanted and what they imagine it should be like.
Kinda hard to keep consistancy when the brains behind the operation has passed on.
he was not the only one working on it he was one of several people working on the story saying the brains behind it are dead are exaggeration. he was one working part in a bigger machine