The thing is, there already once was a Universal Monsters Cinematic Universe. Frankenstein Meets The Wolf Man was in 1943, followed on by House of Dracula and House of Frankenstein (and then later Abbot and Costello Meet Frankenstein). The various movie monsters met each other and fought with each other and used each other as pawns and have a setup that you could just keep using.
This idea shouldn’t be so hard. You don’t even have to do the original movies again - just pick up with the characters in 2016 and run with it. But Universal keeps trying to make it difficult and make everyone have an “origin” movie. They don’t trust that people will understand what’s going on if they don’t see everything from the beginning. But these monsters are sunk deep enough into our culture that you don’t need to give us another updated origin of the Mummy or of Dracula or of Frankenstein’s Monster - just assume we know who these creatures are and get on with whatever they’re doing in 2016. You can come back and tell us how they survived later if you must, but frankly you probably don’t need to. They’re monsters! They always come back.
