All I ever do is solo and have done so for the past few years.
Overall the reward system in this game is not rewarding.
To follow up with the OP, it's shit. I strongly believe that's why the game has a current player base of 50 or less
Nobody wants to invest their time or even hard-earned money to get NOTHING in return.
I can't say I've ever experienced a dev team that just doesn't care, lives in denial, or keeps all functions of the game secret as if they are some kind of cabal.
Yet, here I remain playing, what the fuck is wrong with me... and the rest of us