I know it's not 'canon' but they are now considered the official continuation of the Trek TV shows. They did a Star Trek Relaunch years ago. They all take place after the TV series, and events that happen in each book impact stuff that happens in other books. Also, events that happen in a TNG novel can impact a DS9 novel, or a Voyager novel, or an Original series novel.
Yeah, the Trek EU is pretty much set up the same way as the Star Wars EU now; everything fits together.
That is what I want for Aliens and Predator. I find EUs like this far more enjoyable.