Is taking charges REALLY an effective defensive strategy? How effective do you have to be at getting the charge called for it to be a better strategy than going for the block/trying to alter the shot?
It depends. The threshold is lower for players who don't block or alter shots. Being short, Glen Davis is probably better off trying to draw a charge. He's also a bench player, so it's not as big of a deal if he instead gets charged with a blocking foul. He's also physically solid and can take the contact. I don't really want to see KG trying to draw charges because he can alter a shot, he's too important to risk picking up a foul, and I don't want to see him crashing to the floor. Big Baby is the exact opposite. Heck, after basketball, he could make some money doing Chris Farley-style physical comedy. He would make an awesome professional wrestler.
As for stats, they should just have an overall stat for forced turnovers that include drawing offensive fouls, stealing the ball, and anything else you can think of.