Assassination missions are now a credit giveaway. There is no challenge whatsoever in doing them. The newest wrinkle is that you have to go planetside to make a scan.
I remember doing one of my first ones in a Vulture (b4 engineers) and the target was in a Corvette. It was scary, particularly when you didn't have much CR. I got him, but I didn't forget that encounter.
Also, they would have wing mates to keep you busy. You do one now and security is already there. They certainly need a polish.