FDevs policy is really weird. Up to that point they were very eager to stop unbalanced money making asap, only to implement the most unbalanced way to make money the game has ever seen intentionally. I suspect this decision has been made not with the best interest of game mechanics but from a sales perspective.
Honestly, I've barely done a single mission since 3.3 dropped.
I don't need to earn superpower rank, I have little interest in the BGS and I don't need any permits so there's nothing the station Mission Boards have to offer me.
About the only time I do a mission is when, if I'm waiting for a ship-transfer, I take an Assassination or Massacre mission for the lulz.
At the moment, ED is just about collecting mat's, going mining, buying stuff and engineering it... so you can do all that same stuff a bit better.
Just as well I've got all my ships to rebuild, prior to moving them to Colonia (bankrolled by more mining) or I probably wouldn't be playing, I'm afraid.