I think with the staffing/costs that they will save for the rest of 2016 they would have a nice nest egg to start the year with!
In addition to the staff that works the parade hours (taping/roping the areas, vectoring guests, controlling lines etc) plus the fact that the few nights MK is open there is the huge influx of people that seek to go to the MK just because of the parade / FW / longer hours those days, they might see more evening out of their staffing needs across all aspects of the park.
I suspect that they also plan to have ROL rolling reliably by thanksgiving to suck (um, distribute?) the crowds to animal kingdom. I also think that this is why the Star Wars fireworks are planned for nights MK is open - to help disperse the crowds because MK is somewhat unbearable those evenings.
I looked back at the schedule from 2002 when we had our honeymoon for 10 nights in September. I think that the parade ran once a week and fireworks twice a week! That's it! (This was pre-party era)