The biggest disappointment with TLW was IMO how they pretty much ditched the whole 'standing on the shoulders of others achievements and taking the next step for profit, not for science' theme of the first one, in favor of a going-by-the-numbers action adventure. The irony is how they kept Ian Malcolm (the harshest critic of John Hammonds theme park and proponent of the above viewpoint), but reduced him to a generic action hero, repeating how this, uh, will end badly some 57 times. And his daughter is just obnoxious...
It might be faithful to Crichtons book, but it was just underwhelming as a film.