Actually WLS-DT has had (and continues to have) a pathetic record in their handling of high definition. I personally feel they should direct their attentions to that area first.
During network programming, they frequently have problems switching back and forth between Dolby Digital and non-Dolby Digital programming. This manifests as a 1-second audio dropout whenever a show resumes from commercial break. In some cases, when a show first starts, the Dolby Digital track is not properly enabled at all, leaving only 2-channel audio. This causes all voice information (encoded on the center channel) to be lost completely until one of their network engineers notices.
None of the other Chicago HD locals have this problem...