IMHO the bolded comment from your post is key. Other top coaches are very good at adjusting how they play offense and defense based on maximizing their strengths, and covering up their weaknesses (as much as possible).
Didn't Kim say something like "the system works if the players give the effort"? That's nice, but she seems overly stubborn because "this is the system and players knew this when they were recruited". Maybe they did, but maybe the recent epic beatdowns are making players rethink the validity of that strategy. And maybe Kim needs to be not so stubborn and realize that blind adherence to her "system" isn't working for this group. Great coaches morph and adjust, they don't try to consistently force square pegs in round holes.
I also wonder if her strategy relied a bit too much on recruiting "street ball" players - Kids who just are programmed to play one on one and struggle in a team concept. Or if she's recruited more athletic types who she's trying to mold into basketball players instead of basketball players who also happen to be athletic. Or maybe I'm way off base. I'm just trying to figure out what's wrong with the team - the coaching? The "system"? The players? The recruiting? A combo? I was shocked to see often times at least 3 players sub in 1 minute into the 2nd half or leave a group on the floor for 1-2 minutes then sub them out. And if you are taking them out for mistakes, how about pulling each player aside and having a conversation about what they are doing wrong and what you want to see? I didn't see any of that really. Or at least not much.
Again, I'm not trying to point any fingers or throw anyone under a bus, but we've all seen the mess out on the floor on 2 of the worst smackdowns in LV history, so how do you fix it? I'm not sure blaming the team leadership, or discussing their "quitting on the game" is the answer.
Pat had the stare. She had the personality. She had the power - and backed it up - to blast players or teams when necessary, and they responded. Caldwell needs to figure out what will work with this group, and some of that may be changes on the part of the coaching approach, be it the system or the message.