The problem with professionalism is that they are people on a star ship, but they often act childish or like teenagers. TOS was corny at times, but they acted like absolute professionals most of the time. In SNW I missed that, they were often super relaxed with a good joke on their lips in the face of eminent death. Or I remember when they hunt a poor underdeveloped guy through the ship and get him and making jokes after that. That was definitely the "WTF are they doing" moment for me that made it hard to enjoy.