I don't think you can say that Pearl didn't care. I think he took top talent and gave kids a chance. There was no hiding the character issues with Ramar and Duke when brought in, but Pearl gave them a chance, the kids are the ones that blew it. If they didn't follow the rules, then they were gone. Everyone loved Major Wingate, but he didn't follow the rules, so he was gone. Tyler Smith was the best player on the team, he didn't follow the rules. So I don't think you can put Pearl in the "don't care" category.
Point is, that Pearl was able to take the 4 and 5 star kids. Some had issues that nobody was hiding when brought it. He gave them a chance, some were successful, some were not. When they didn't, then they were gone. I don't think it was a lack of not being able to evaluate character.
If you tell me that we could have had a kid that had potential character issues but was an elite player that could have taken us to the NCAA tourney the last 2 years, then IMO we take a chance and role the dice... ala Marshall Henderson, Cousins, Ramar, Crews, or whoever it may be. Take all the players off the Pearl teams that you have listed as bad, then we have 11 straight years of missing the tourney instead of 2.