Actually they should have added a beach head area to each planet after the initial story is completed. In these areas there should be quest givers that give quest only pertaining to that planet. Much like the free roam mission markers. These Quest givers should also be building a story within the main story. The ever continuing story of reclaiming what was lost. The reef alone should have had a tower like area with new reef mission only quest givers and sales reps adding new join able factions within the reefs own monarchy. In this way you really could pick and choose missions to build you own legend. Just some thoughts....