Raleigh-Durham-CH is market #43--probably considered a "large" market by most (but there is no arbiter of such things). Y'all have major league hockey, don'tcha? Sounds like a "major" market to me! (I used to be a jock in R-D, and that would allow me to embellish my real accomplishments).
Many broadcasters, regardless of market size, are wary of Imus because of the visceral reaction his Rutgers comments elicited. It was a racial thing. And, perhaps, that's doubly-troublesome in The South.
I haven't heard the WABC version, yet, but reviews thus far have been pretty tepid, saying that Don sounds gunshy and Bernie McGuirk's role has been minimalized.
When Don retires and Bernie takes over, that's when I'll sign up as an affiliate.