In two years you'll most likely get to do it again with the addition of the next race and iconic with the next full expansion. Next year will also see the release of at least one archetype (Dragon Disciple); and potentially between now and the next new race/expansion we'll probably see additional archetypes and epic destinies.
With no plans to do anything with reaper for players who have more than 156 reaper points, adding new races, iconics, and archetypes in addition to new content/gear and level cap increases appears to be how SSG plans to retain or bring back veteran players who have achieved completionist and/or max reaper points, and give existing players who have not achieved these things something to chase after.