Universal is Film Studios, that's their M.O.. The Studio theme gives Universal a reason to keep much of the park lightly themed without spending Diagon Alley levels of money for more immersive theming. Plus the Studios concept
is still strong with the NYC, SF, Hollywood areas doubling as film lots. Additionally, their parks in Beijing, Singapore, Japan & Hollywood all are Studio oriented. Only IOA and Epic deviate from that
pattern. So, no, I doubt they'll change USF in the near future. Like the Castle parks are to Disney, the Studio theme is Universal's calling card.