I know, I'm asking for a lot... But wth, EC could use some change.
Your concept does not sound much different.
If you seek a change in politics, you'd best found a new rich(in sense of roleplay depth) and unifying religion (or culture) with a goal to safe or doom the world or certain (groups of) people.
Not a colony of an already existing religion thats part of one of the three big political powers in EC.