@Milk there's always something to do in pso2 even without the urgent, buster, or limited time quests, you can always take daily, alliance, and client orders, all of which bring in precious exp, not to mention big bucks, as for the lack of players I actually like it better when there aren't a lot of people in the same block as me because having too many people causes major lag and can even cause a crash
but if you want a ship with more people you can always apply for a transfer during the next maintenance cycle and move ship 1 feoh
P.S.
You get huge exp and meseta for completing the weely ARKS mission "take orders - make even more meseta"