Vanguard is darker even than DS9, so not everyone’s taste.

What it does have is not only Starfleet on-station but also 4 ships that are based there from a scout explorer to a Constitution class. It’s a lot of characters. Plus Tholians and Klingons. The mystery takes a bit to come together but it’s excellent.

The Enterprise and her crew show up occasionally but aren’t the primary characters. There is one Vanguard novel recently add that is Enterprise-focused and is one of the best books since Destiny.