Old Number 7's thought makes sense given where the signal's strength lies, but it seems to differ from what the station has been doing for their main programming needs. Most of WILM's weekday programming now is from the bird, all of it conservative, and all of it white.
However, the station does do quite a bit of local minority programming, with John Watson's weekday talk show, Saturday morning local talk with Harmon Carey a black political activist, and a Sunday evening local talk show with Charles Brittenham, the president of the Delaware NAACP, as host. So I'd have to say that WILM probably is doing more locally produced minority public affairs type news programming than any other radio station in the state. The other minority focused radio stations in Delaware are: WJKS 101.7 that is an urban station, 1510 WFAI a urban gospel station (their studios are in Downtown Wilmington, their transmitters and city of license are Canton and Salem NJ respectively), and 1600 Dover (don't know the calls as they've changed very often) that also airs urban gospel.
My guess is WILM's money is being made with the national satellite programming rather than the locally produced minority shows (possibly Watson's being the notable exception to that rule). However, Old Number 7's point about WILM's positioning as a local news authority in the morning would be lost if airing Imus from 6am-10am. To me it would make more sense to keep the local news from 6am-9am and then from 9am-12noon air Glenn Beck and drop Hannity and air Watson then (3pm-6pm). Granted Imus' show would probably draw a crowd if WILM was willing to lose that morning news position and allow WDEL to become the only news station in town, which seems to be what is happening more and more as WILM seems to be cutting more and more local news for satellite programming. So WTUX may have a point and who knows, we may just be able to hear "Don Imus in the Morning" in Wilmington come December.