Allow me to say this, Universal Hollywood has the better show of quality.
Outside of Transformers and Mummy (which, I would exclude that as it is on borrowed time), the park has a great helping of variety.
From Animal Actors/SES (Which I find as the better versions of their Orlando counterparts), Minion Way/SSFL, Universal Blvd, Springfield (which while doesn't have the added flat, does have the better designed Springfield area), Hogsmeade (which has the added wand effects and Dementors in FJ), and not mentioning Waterworld.
Honestly, I think once the Lower Lot Expansion (which includes Nintendo) and Pet's comes to the park, it'll make Hollywood the better Studios Parks (not saying across the entire brand of Universal parks).
__
That said, to come back to Pets, what makes me interested is that if it's a Fallon in the terms that was a compete gutting of the original showbuilding and to extend it.
The only problem I see from that, that makes me think it'll be just a complete demo and rebuild, is on The Walking Dead Attraction. I hope it gets the boot ASAP, as that building could be rather useful for the Pet's Project.