This isn't sexy or earth shattering but it's fairly reasonable and likely helps both teams.  I was a little surprised with Zach getting the boot in the YBGM voting but I guess perception is reality.  Against that backdrop, here's the trade:

Atlanta gets:
-Zach
-a second rounder or DD if necessary to even things out (if DD is included, it has to be Williams to fit under the cap)

Portland gets:
-Josh Smith or Josh Childress or Marvin Williams
-Lorenzen Wright
-Anthony Johnson
-Atlanta's 2007 first round pick, preferrably the 3rd if they get it; the 11th if not.  (very unlikely they give up the 1st or 2nd on this deal)
-a future first round pick with varying levels of protection to even things out

Why Atlanta does it:
A strong inside presence to compliment Joe and the kids; two all stars in the east ain't bad.  They've needed inside help forever and would still have plenty of youth on the wings so the loss of the picks is easier to swallow.

Why Portland does it:
Somewhat appease the masses by moving Z, open things up to be more team oriented, improved defense, and free up time for LA.  We add some veteran presence in the form of role players at two of our need positions (1 & 5) with only one year left on the contracts for Wright & Johnson so if they don't work out you've rented mentors for a season and free up cap space.  I'd probably take Smith, Childress, or Williams in that order.  None of these guys necessarily blow my socks off, but you'd have to consider them an upgrade at the 3.  The 2007 pick gives us two shots at a keeper in a deep draft or the chance to trade the picks together and move up and get one guy we really like.  Either way you add to the core this year and have another chip next year.

This works according to RealGM Trade Checker: http://www.realgm.com/src_tradechecker/1/  (don't forget DD = Williams)

I'd like to think we could get more for Zach but the reality is there is no way we can deal with Chicago without a 3rd team and that makes it highly unlikely.  I know a lot of people like Lewis but it's just incredibly unlikely Seattle trades with us or vice versa given the rivalry, within division, and any lingering hard feelings regarding Nate.  That leaves us with limited options if we want to move Zach but this one might work.