Universal Studios Hollywood is not a locals park. It is a tourist park. You are treating it as a locals park, which it is not. Disneyland, which is a locals resort, is investing in its parks at about the same rate, give or take. (Yes, they made a bunch of splashy announcements, but they're many years away.)
Universal Studios Hollywood does run special events to appeal to locals -- Horror Nights, holidays, the 60th tram tour festivities, now FanFest, which is a USH exclusive! If you're expecting a new major attraction every year for this park, your expectations are just not realistic, sorry.