I think "Universal Horror Makeup Show: Presented by Blumhouse" would absolutely garner interest from event goers. It'd be a good way to keep Blumhouse involved with the event without taking up a house or zone space.
Marathon of Mayhem is my favorite thing I've experienced at HHN PERIOD. So I'd love to see another Lagoon show. But like
@Jake S said - we haven't seen any indication that a lagoon show would return this year.