I don't think they're allowed to turn the lights off like that during gametime. They do need a better after goal tradition than just the howl. St Louis has the bell, Islanders have the yes chant. That sort of thing. Get the crowd into it and build an idenity.
I've always thought that, at the start of the game, they should turn out the lights and have a Coyote (a real one) on the jumbotron howling and encouraging the crowd to howl in the dark. They came close to this idea with the eyes on the phone, sorta.
If you've ever lived somewhere near open land, Coyotes make a super distinct pack noise when hunting/the get a kill:
Something that mimics that in a neat way would be great IMO