It is hard to see how the Suns can work a deal that will make much of a difference. Right now their main problem is health and the fact that the team is terribly dependent on Nash. But other than Kidd, I can't see any PG who could run the Suns offense and even Kidd might struggle.
Ideally, the Suns would find a big man who can play tough defense, rebound, block shots, and score... but no team in their right mind trades that kind of guy.
I keep looking. Getting someone like Steven Hunter who is only used for special situations might make short term sense, but his contract make him unattractive long run. Most of the rest of the available bigs can't run well enough to get playing time.