...I'm not very good at making suggestions, but I figured at least asking some questions would be helpful to your cause, so here you go!
A few questions that may inspire answers:
Category: "Basura"
~You keep on referencing "Humanity".
-Are we (and by we I mean myself, of course) to assume that those who traveled off into space are no longer referred to as "humans"?
Category: "The Williamsburg Militia"
~How did the militia expand to a global-level institution?
~Why is it named the Williamsburg Militia?
~Are there any "famous" officers/upper ranking men who may or may not have a reputation of being tyrannical with their ways?
~Is there any corruption in this militia? If so, how?
Category: "Mercenary Squad"
~How would one make contact with any of these mercenary groups?
Sub-Category: "The Puppeteers"
~You reference black magic here, and I'm curious.
-How did "magic" become a part of Basura?
-How does it work?
-Are there categories and a system similar to the Elemental System, where certain categories have strengths and weaknesses
against other categories?
Category: "Locations"
~How does the transportation from these places work?
-Are there oceans, and if so are there any working boats?
-Is there any form of taxi-like system in place, with carriages and such replacing automobiles?
-What about railroads? Technically, the archaic-like (or at least they'd be archaic by Basura's time period, I'm assuming) would be easy to replicate...even for the not-so-
smart, in my opinion.