The Aria questline should definitely end with MC having substantial power over the third republic, maybe even an option to end up as the chancellor or marshall/second in command
Because in essence, we fund, plan, prepare, reorganize, rearm, act as a critical spy for the entire rebellion and then fight some of the most important battles with our own company. If the MC didn’t exist Aria would end up as a broken slave for the mastersphere and the scattered fighters would be cleaned up easily.
Sure the option to loot all of the republic’s treasure sounds cool, but it is infinitely less satisfying compared to having actual political power