John's honorific title for the Santas is my favorite part of this.
My second favorite is the modern cartoon style Santa... it's harder to fully get it to work in the comic, but think of it like it's a Roger Rabbit kind of thing where everyone else is "real" and he's a toon. Drawing him with a pen that doesn't have pressure sensitivity was a fun exercise. I wouldn't do it all the time as I hate it, but for this comic it made sense.
I know we just saw a comic where Kris was back to a small, elderly man-- but here he's from a universe where he's still the Rudolf injected hulking Santa. Is he the one the previous George fought? Maybe... Maybe all Georges fight him... we don't know.