My priceless incubus moment would be to take several fans from around the country and locally and bring them back to the Morning View house (or some chill location like that) for a very personal and acoustic show. Afterward the guys would have a BBQ with the group and just chill while the sun goes down. I can't imagine anything more awesome than just relaxing and eating great food with great people while enjoying great music.
I would love to pick their setlist for one show! Maybe just a small, invite only show, like the ones at HQ Live.