How about something INSANE that would make people go nuts? A Gene Wilder Willy Wonka soda or an Oompa Loompa soda where there is a super small amount of chase all golden "golden ticket" figures? Maybe have normal chases for the two like a flocked Wonka or a jacketless Wonka? And a glow Oompa Loompa. But in exchange for a chase in a case or replacing a common would be a golden ticket one.
It would be bad for completionists but wow that would be fun!