Timelines are great, and so is a division between the upper and lower classes in Hylo.  

So is there a sort of nobility in addition to the Royal Family?  

Where does the religion get it's priests?  Are they nobility, or do they specifically look for people who could be taught to build and repair Colossi?  

What sort of power does the Colossi Priesthood [i]have[/i]?  They must be in some level of control of the military, if we're going with their role as the technicians in charge of the their mecha.  

So priesthood brings some prestige with the upper classes(though, possibly some disdain from the lower in recent years).  Imagine poorer, desperate people "selling" their children(after extensive intelligence and aptitude tests) to the priesthood.  They would have a better life, and would cease to be a strain on the family.  But in return, they are disconnected from(and possibly even completely rejected by) the lower class community that they were born into.  


So how does the Hyloan royalty keep their control of the lower classes?  Or, maybe they don't.  Maybe in the last eight years they have been quickly losing control of the populace, and are resorting to military measures to keep the peace in their own borders.  

EDIT: Oh, and what exactly did the Outcast Guild start up for?  What's their mission statement, and who started it?