I also don't know how important a bubble is to a great Universal Orlando vacation. Walt Disney World is basically the only resort like this in the world and I don't think Universal needs to match that standard. Just get the transportation between the two campuses up to snuff so guests don't feel it's a burden to get on a bus and transit over (and honestly, I don't know if it's "bad" now — I've not yet had a reason to go between the campuses). If it's similar to going from Animal Kingdom to Epcot ... I mean, that seems fine, right?