Universal has done a great job at expanding and should get praise, but they are not Disney and never will be. Just waiting in line for the Harry Potter ride and seeing that huge white building the ride is in proves that. Universal can build great attractions but they will never have the brand or overall holistic experience like Disney Parks do.
That being said I think the attractions will open in the following order (only including the ones we know are going to happen):
Rivers of Light
Frozen
King Kong
Avatar
Universal Waterpark
Star Wars
That being said I think the attractions will open in the following order (only including the ones we know are going to happen):
Rivers of Light
Frozen
King Kong
Avatar
Universal Waterpark
Star Wars