Hill and Blair were key role players in a team that won 61 games. They have value. Look at the league for teams that need either a guard who can create his own shot, or rebounding help.
They're not star players, but they certainly have specific skills that help teams win. Could they get Dwight Howard etc: No. Could they be used to get good players who are overpaid: Yes. e.g.,
http://games.espn.go.com/nba/tradeMa...radeId=3zrp5tf
Dyess, Blair to Philly
Jefferson to Sacramento
Iggy Here
Saves Philly 15 million a year, Can resign Thaddeus Young, sacramento uses cap space to sign RJ(and RJ is free of the burden of playoff pressure, and can just score), We get Iggy. A better player than RJ, but on a more expensive contract for the same length of time.
It's a talent upgrade for us, and Philly would get a trade exception of ~ 7 million, which they could use to pick up another rotation player(A shooter might be an option).
Do I see that actually happening: No, probably not. But that's not too outlandish.