The more gold you HAVE- the BIGGER the decay rate. I spread out my gold so the decay remains at -5 to -10. The rest of my work camps? No decay rate. Only my town due to a smaller storage. That's my fault too right?
also- 3-5k per quest. I'm sure you enjoy the grind..and the time spent doing it just so you can revive one dragon that can die in seconds.
And dude- one dragon can't DOMINATE an entire city byitself..in fact..try it- it can't - it will DIE.............to a horde of arrows. And the solution to your "i hate having so many dragons running about" is a dragon selection bank..or dragon lair.