Both In and out of park please! Castle show, streetmosphere, maybe even a parade? Bowlero, monstermini golf, splitsville in citywalk. So many great things could really fill out the nightlife of CityWalk! It definitely has felt different since the removal of theatre.
It's why I welcome a security overhaul; because if it allows them to expand the life in CityWalk to bring back the nighttime crowd more properly--then that would be a major win.
In park I think the answer is obvious (more shows, even if it isn't like the once rumored Bourne, but rather shows like Untrainable); but outside--one of CityWalks core identities is on how it's nightlife defined and enticed locals into that area. If it comes from facilities created as part of P515, or as part of a transformation to make CityWalk the Entertainment Capital of LA again; it needs to be done for the future of USH.
I came into when USH was regarded as a destination not for the park; but when it was booming for the nightlife and clubbing potential that came. Be Howl At The Moon, Infusion, or Jon Lovitz. Looking at the property now; it feels like one of the biggest things that needs to be finally corrected with the incentive to make USH a proper "Resort Destination" incoming. And it is the one thing I am desperately hoping finally happens.
Indoor Mini Golf, Bowling, the return of Howl At The Moon (with the overlays that Red Coconut has had), and even new comedy clubs feel like very easy wins to cater to multiple crowds here.