Eh...no. Cook has shocked the hell out of me by becoming a very useful player this year. Kind of reminds me of Terry Mills, and creates a lot of matchup problems out there as a reserve.
As for Odom -- its a talent thing. He's big, athletic, multi-skilled, a top 10 reboudner in the league despite not being a true PF, can in fact block shots and finsih inside. He is not a superstar player, but he's a young guy (25?) who can do just about everything on the court, and maybe just needs a little push to become something really special. Responded very well to Riley last year with the Heat (where he and Wade led the Heat turnaround and playoff run). KTs pretty much maxed out his talent, and he still isn't as good as Odom. And he can't do anything about his height. And Odom still has a ton of room to grow. It would be well worth the minimal risk. But from LAs perspective there is no reason for them to do it for the same reasons. If you have two guys who cna put up siomilar numbers, but one of them has the potential to do far better while the other is busting his *** just to maintain, you take the over-talented guy who can create for teammates and cross your fingers. Worst case, you're just as good. Best case the guy turns into 20-10-5 and you're wearing a perma-grin.