Maybe it's just me, but it feels like this show can't even do the Wesen-of-the-week thing right anymore. Mischievous Christmas pubescent gremlin Wesen? Really? It seems like they're either already running out of ideas for new Wesen, or they're so obsessed with trying to make holiday-oriented Wesen that they can't come up with anything good. They couldn't even be bothered to do their research properly, since the gremlins shouldn't have come out yet. The twelve days of Christmas begin on December 25, so the gremlins shouldn't have been active for several more weeks.
I was tempted to just fast forward through parts of this, and to top it off, they got rid of the one character who actually shook up the stale character dynamics from the previous seasons. Now that Theresa is gone, we can go back to the usual Wu-introduces-crime scene, Nick-and-Hank-assume-Wesen-did-it, Nick-and-Hank-go-to-the-trailer, Nick-and-Hank-behead-something-in-the-last-thirty-seconds formula of the past episodes... but wait! The epic post-Theresa twist is that they're doing another god-forsaken baby plot.
It's like the writers are intentionally piling on the stupidity as deeply as they can so they can take bets on how bad they can make the show before we stop watching it. Keep it coming, writers, and you'll get your wish. At least Wu joins the Scooby Gang next week, but at this point I'm thinking it's too little way too late.