Zalaxy,
Those are very good questions and I am sure other people are wondering the same thing. There is more info that goes along with this that explains the purpose and reasoning behind the SPLIT and RESTRUCTURE but it is all still being sorted out.
That chart is representing the SPLIT between the Devs and Non-Devs to provide a "cleaner" environment for development, but does not show the individual department level setup yet.
I won't address each of your questions right now because that is certainly not our final structure in full detail. Numerous combining discussions have already taken place, often saying the same thing you have.
The basic plan we are trying to lay out is the Founders, who are the OWNERS that never change, will oversee the major decisions and disputes but not be involved in day to day management. The Director level handles the coordination of the departments and communication/personnel issues so "the left hand knows what the right hand is doing" along with doing tasks at the department level whenever possible to help get things done. The real day to day work comes from the departments and Leaders, who are simply workers that try to keep organization and coordination in tasks needing to be done. We all need primary responsibilities but we also have secondary jobs too. For example, if an announcement needs made in the next 24 hours, then we need to know who to go to so that is accomplished properly. But that doesn't mean the Communications Member does nothing but that, quite the contrary as they are asked to help in other areas they have skills in, like support or moderating.
That is a relatively short summary and more details/changes are upcoming.