This is what I've telling Lakers fans since the season started. The grind-it-out, feed the post, rebounds=rings philosophy that won them their two most recent championships got put down like Old Yeller once Miami formed their superteam.
To succeed in the new NBA, you need athletes and depth. The most effective offenses are built around slashing and running and shooting, while Tom Thibodeau style help defenses, which demand quickness and footspeed, are en-vogue. Lakers can sign all the 7 foot, defensive players of the year they want and it still won't cure their defensive woes. They are slow. Very, very slow. D'Antoni appears to have fixed the Lakers offense at times, but ultimately, they're not built to run it with any sort of consistency. And he knows it.
If Jamison can prove to be reliable, the best thing for the Lakers might just be to move Gasol for some athletic wings. I simply can't see this old, plodding team stopping the Spurs, OKC, Clippers, etc. They'll have to get sick hot from 3 to make any kind of playoff run.