I'm being deadly serious right now.
This is inspired by hearsay of a Crystal theme having existed for the Society of the Ordered Mind. Perhaps it is time for the triumphant forces of Sanctuary to possess signature monsters of their own. The theme could go in the direction of physical assets arriving with a teleport VFX—animatrons, Warders, and eventually Watchers.
Or perhaps illusory projections would be preferable.
Flickering facsimiles of, at higher levels, the city's greatest heroes past and present.