Originally Posted by ss9001
kind of indicates the show may be running out of steam
I wouldn't go that far. I think they just got caught in a Stargate SG-1 trap. "Well, we're definitely going to get cancelled after this season, so we need a really big finale!" -> renewal announcement -> "Uh oh, now what are we going to do next season?"
I'm guessing they introduced the whole "secret society" aspect as way to keep the show going, just in case. Even if Division gets taken down in tomorrow's finale, Percy will just get his foot in the door with the new sinister group, and the show will continue from there. This season's finale is pretty ridiculous, but I'm glad they were trying to do something as a big send off, just in case. I'm even more pleased that it turned out to be unnecessary, so I won't hold it against the writers that it looks a little silly as only a season finale.