The Dark Universe is in a tentative state after the poor performance of The Mummy, Universal originally wanted The Mummy to be the first of many movies featuring horror icons like Frankenstein, Dracula, the Wolfman, the Invisible Man, the Creature from the Black Lagoon, Dr. Jekyll/Mr. Hyde etc. as a fan of classic horror, I do still hope they could continue to make a good universe featuring these icons.
The director of John Wick has stated that he wants to build a mythology, John Wick's story is supposed to be one of many set in the same universe, there have been talks about another movie titled Ballerina and a tv show about the Continental hotel is in the works.
As much as I love Universal Monsters, I'm going with the JW universe or as it should be titled, the Assassins universe; the worldbuilding for the latter has been pretty good so far, the John Wick films have told simple stories but at the same time established an atmosphere and a system that opens doors to other stories.