Purely speculation on my part, but based on what I've seen/heard/read so far, it looks to me like the HC candidates would be; Cowher (if he can be convinced/persuaded), Martz (who apparently wants the job), Fewell (who probably has the best shot), snd probably a dark horse candidate OC or DC.
Most important to me though is that we get a real, football-minded GM.
Also, problem with Fewell as a candidate is that he's coaching for a job and doing a pretty good job given what he has to work with. And that means we're gonna be screwed out of a goo draft pick because we'll probably go 6-10, maybe 5-11 depending on whether the Falcons continue to fall apart.