Once a player has max'ed all rebel support skills, allow for them to reset the rebel ops missions by region, as often as they want. Place a button function on the TACMAP to reset missions once hovering over desired region.
You currently allow the story missions to be replayed. So, this is not adding anything new to the game other than further access to existing content.
TBH...the world is void of any structured activities once you complete it. Give us the option to partake in the missions again, without having to start a whole new profile.