The thing about Hollywood Studios is, it has four super-popular rides, and it's about to get 4 or 5 more.
Every single comment above, about the problems of HS, is true. But who is going to skip HS on even a short trip, when it means skipping the new Star Wars Land and Toy Story Land, and 4 of the current top-rated rides in WDW?
So the 'problem' Disney will need to address with HS is, how do they maintain guest satisfaction, despite ridiculous crowds and lines?
I would think that the solution is more smaller activities that put a smile on peoples' faces.
But the way Disney is moving, the solution will be to have open upcharge events that will let people ride with shorter lines, as long as they are willing to pay extra.