And can you explain to me what the point of KWS is (besides money)? [...]
Money, in ED, is not what it used to be 8-10 years ago.
Currently, straight from the start, new players can quickly learn to make millions, billions.
The good thing is that it makes rebuy costs trivial, whereas it was TRAUMATIC back in the days.
So, what is left about money? I believe that it has become something similar to a score, with some opportunities to be among the high score during the CG's, for instance.
What is a game (video, sport, etc...) without score?
But yep, I am personally not sacrificing any of my utility slots for a KWS...but that is because I want my PvE build to be highly PvP capable, since I do CG's mainly to meet other commanders (whether hostile or friendly). Also, if you join a wing, and one of your teammates is using a KWS, then it shares the scan among all teammates.