Just an observation but, I sent one of my crew on a class 6 slicing mission which cost me 1415 credits, and she returned me 1265 credits. This mission took over 30 minutes to complete. Seems a bit ridiculous that you lose money on these missions most of the time. Perhaps the devs went a little overboard with the nerf bat?
Couldn't you just nerf the credits you get from slicing boxes manually out in the world, and leave the ones that take 30+ minutes to complete profitable? The only point in sending your crew on slicing missions now is to level slicing at a slight loss, because the slicing missions are faster than the other missions.