So I think the OMG! Factor has kinda worn off now and the big lug is more of a nuisance than anything else now, forcing people to watch where they stand because Khyber knows it ain't watching where it lands.
So I was thinking... Dangerous for one of my limited mental faculties, to be sure... Why not change it up a bit? Make it a random result as to what sort of Metallic or Gem dragon lands with a 1 or 2% chance of an absolutely massive Great Wyrm Gold Dragon teleporting in and hovering over the marketplace in all it's splendour due to being too damned huge to land. Whenever the Gold appears EVERYONE currently in the marketplace gets a random one hour buff that lasts through death and stacks with everything else.