I'm not entirely sure specifically about this 'boogiepop omnibus vol 1 3 light novel'. It could be a part of a series that has unique storylines, characters, and themes within the light novel genre. Maybe it has a cult following among fans of that particular type of literature.
I'm not sure exactly as I haven't read it in detail. But generally, Boogiepop series often involves elements of mystery, supernatural, and complex character relationships.
It depends on your interest in the New Avengers. If you're a fan of superhero comics, especially those related to the Avengers, then it's very likely to be worth your time. The omnibus format usually means it has a lot of content, so you'll get a good amount of story for your money. It might also introduce you to new aspects of the New Avengers' world, such as new characters or plotlines that you haven't seen before.