I think they'll continue to broaden the roles. In some cases it's not really the greatest idea, but I think that as long as the overall DOD mission statement is being met by all armed forces as a team effort, they probably won't change anything. Also, if they were to try and start individualizing functions, you'd see a push/pull battle across all of the branches to see who gets to do what and, most importantly, who gets funded to do what. It would turn in to a struggle for budget and funding, and they're definitely not ready for all of that!
As a history enthusiast listening to my father and his older brother both WW II veterans dad was Army his brother Navy they both stated that each branch has its own place and they need to be separate.When the Army Air Corps split from the Army into the Air Force the discussion then was,to have all aircraft for all branches strictly for the Air Force which thankfully was,ruled out .
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