I am only at level 12 now, but I have yet to really join any full parties yet (Dunes parties) since I have been opting to solo some easy preys and do some quests and missions.
But I have noticed, and this is my question, that I am seeing mutiple people soloing past level 10, which makes me think that people don't often party in the dunes anymore?
I havn't exactly tried to form my own party yet though, so maybe its just me. But I also noticed when I ran to Selbina to buy my Monk Lvl 8 equip, that the only parties there had power levelers.
This just seems odd to me from my past experience but maybe if I take the initiative, I will find making a party and following through with old ways may still be possible.