I would have loved to have seen what Disney would have done with Harry Potter. I'm not a fan of most of Universal's rides and stores.
Most of their rides just shake you around in front of screens for about five minutes. They no longer have enough different types of attractions like they originally had with "Jaws", "Ghostbusters" and "Kongfrontation". They seems like they are unable to do good animatronics in their rides. All of them stink except for the ones in line for Gringotts.
The Harry Potter stores are way too small as well. There was so many people crammed into one I couldn't even open the door. The line inside it wrapped around the tiny space, and that was in September, which is supposed to be the dead time. The inhabitants were practically smooshed against the glass windows. So I just used a few curse words and closed the door.
Disney would have probably made a boat ride with realistic animatronics. And probably best of all, they would have made a Hogwarts resort. Hardcore fans could have eaten in the great hall depicted in the films. The stores would have been immense too. Yet another thing Disney has over Uni is their street performers. Universal's acts seem so lame like "Straight Outta Food Truck". I'll take the "Dapper Dan's" over them anyday.