I think the premise of a performer feeding on their fanbase, with the twist that the corporate machine they fuel is the one facilitating the entire thing, is really compelling. The art is also fantastic! I like Selenia and want more of her as a character, behavioural quirks and tabloid rumors could have filled her Idol Profile section with more actionable details for the Warden. To echo some of the comments here, it is hard to conceive of Cosmos as a location, it needs a map or encounter table.
Most of all, I wish there was more presented for the player crew to do. Receiving the celestial goodies and attending the show take up a lot of panel space for events that occur passively and do not present the crew with anything to act on or react to. There needs to be more challenge and intrigue here. The facility is the one dangerous part of this pamphlet that player characters will move through. It too needs more environmental detail or perhaps a focus on how the Guardians behave and what they do as threats in this space.
If I run this scenario, I will likely use Selenia and the premise while fleshing out the location to make it more engaging for my table.