The convenient thing about evaluating baseball managers is that you can pretty much just judge them by their personalities, because the manager is less important in baseball than the coach is in any other sport. The difference between a Hall of Fame level manager and some random dude from a Strat-O-Matic league is, if anything, no more than a couple of wins a year. At most. The most laughable amount of money in sports is probably Joe Torre's paycheck.
I complain about Cox's tactical ineptitude all the time, but I do have to say that he's the best at the one skill that might actually be a managerial difference maker, and that's handling the clubhouse. I'm not sure how many wins on the field that actually translates into, but surely it can't hurt.
Sayonara, Sweet Lou. You were interesting to watch, which is really about all you can ask for from a manger. Vaya con Dios.