I wouldn't mind assisting in some sort of broad constitutional reform you want to enact. I believe the Mideast went about this in a very similar way to how the Northeast is today. Essentially, the creation of an Assembly led to the realization of just how screwed up the entire governance system was in general. It may not be a bad idea to start a ConCon for the region to capitalize on the rise in activity.
There is no provision in the New Northeast Constitution for a Constitutional Convention. The Amendment process calls for a vote of the Assembly, followed by a vote of the people at the next regional election.
Essentially, the legislature would pass a law calling a Convention to be chosen by a certain process (Gubernatorial appointment or what have you). That Convention would then convene, draft their own rules and create a new Constitution which could then be presented to the Assembly, passed and sent to the people.