Nah, Black Mesa's version of Xen was a net negative for the game. The first hour or so up to the Gonarch boss fight was an improvement over the original and some of the best content in the game. But Interloper afterwards is some of the
SHITTEST content I have ever played in my gaming life and pretty much ruined the game.
It must be an achievement for the dev to take a decade trying to improve a flawed original experience, only to end up ruining it even more with their meddling. It's gaming's equivalent of: