No one is claiming Davis should start at PF. But if he finally breaks through on offence and can maintain his rebounding while still playing good defence, a combination of Bargs/Val starting, and Davis getting most of, if not all of the minutes as the 1st big off the bench would be great. Sort of like what LA was doing with Gasol/Bynum, and Odom getting 30 mpg off the bench a few years ago.
I love Amir, but hes not going to get much better than he is now. I've said many times before he's a very nice bigman off the bench on a winning team, but Ed could be a near double double guy off of the bench if he reaches his potential.