Do you think the Reapers have a collective mind or a god like figure?

I'm not talking about each individual Reaper where they are "each a nation, free of all weakness", as Nazara stated back on Vermire.  I'm talking about their government (used very loosely), if you wish to call it that.  How do you think the Old Machines make decisions?  Do all of them sort a vote on a course of action?  Do they all have a collective mind  that gives them orders, sorta like Gravemind or the Zerg?  Or they have a supreme reaper that acts as their Commander in Chief.  If the have a president would it be Harbinger or yet an unknown pimped-out Reaper?

Obviously we can't answer these questions definitively, but we can speculate.