The problem is they don't seem to have the funding to keep it up-to-date. For example, they really need to update the back lot tour, which has ended up being made smaller throughout the years rather than expanding or at least updating the props that have been there forever. Similarly, the city area in the back is a neat concept, but really, it's a big area that's pretty much useless unless it is decorated for Christmas. There also used to be more studio/production oriented tours. For some reason there's that stupid Narnia thing that's basically an advertisement for a movie that has been out for a while and those who want to watch it likely already have and own the movies.
Another problem is who do they want to cater towards. On one hand there are classic movies, which there are a decent amount that are timeless and have become part of American culture (i.e. Wizard of Oz, Indiana Jones, and Star Wars [though I'm not a big fan, it is, as we all know, basically the face of American sci-fi]). Or do they want to go towards more modern things to get kids interested (i.e. Pixar and that sort of stuff)?
Also, they need to realize ABC really has nothing and they have it thrown in there pretty much to have some posters advertising their shows, that nobody wants to watch (well, to be fair their fairytale show, I think it's called Once Upon a Time is decently and they're getting an Alice in Wonderland show, but they have so many that are just bad, yes, I'm looking at you Splash, not even Katherine Webb can save you, which should let you know how bad it is).
But as a whole I enjoy going to HS, and it's nice that they mix classic and new characters for Fantasmic, which is pretty cool to watch from the front row.
Also, they should get Jeremy and the guys from Top Gear to be part of the stunt show.