I just really want some sort of exhibition. The Studios need to be just that: a STUDIOS. The Lucy exhibit is beautiful (and, personally, it would work best along Hollywood - a Universal-themed one would be spectacular in that location) and just really promotes that sense of admiration for the subject of entertainment alongside HMS. In this sound stage, a roving exhibit would be really beneficial. For each new artistically-driven film Universal decides to promote, this new "prop exhibition" space could really help boost local adoration for the franchises that come as a result of these hit films. Even films Universal doesn't create, like Hunger Games, can be promoted with visceral scenes and replica props.
I'm also hoping for a Universal Creative exhibit behind USS. Uhghhgh.