I was talking to some friends about some "Back when I was a kid..." stuff that we enjoyed in Istaria and I got an idea: Each of the seasonal events that the game has should have some mini "Epic" bosses wandering around spawning regular event mobs. Gnomekindle would have "evil" "bad santa" Ogres wandering around occasionally spawning Gnomekindle treants (95% regular gnomekindle treants/5% blighted gnomekindle trents). The Fall Festival would have Tavern Keepers, Ghostly Bartenders, or Pickle Farmers wandering around occasionally spawning the various alcohol elementals.