Frankly, that's more of a question for the 'BBM thread, but I'll bite. Considering Johnson's successor on weekends hasn't moved up, I can't imagine Rob would've been in a better spot at WLS, 18 years after his hiring. I know it's politically incorrect to say, but placing Johnson alongside Krashesky and Magers wouldn't have exactly made the most diverse male core, either.
Had he not moved to CBS, a smart GM (haha) might have picked him up at Fox in '08, '10, '13, or somewhere in between. At this point, he's still WBBM's best option, outside of moving a pushing-60 Jim Williams to the A-team, which would go against everything the bosses have been pushing. I understand the Sullivan firing, but the Sargent hire is beyond uninspired. I get that corporate likes keeping things all in the family, but bringing in a complete outsider (at least Kate went to Notre Dame and spent time within 100 miles of town) with the warmth and charm of a cold french fry gives the impression that they're just not trying.
It's astounding the competent, known, available anchors both at the station and on the Chicago bench that, time after time, WBBM refuses to tap into. Are many of them young? No, but what do they have to lose if they reinstated Roseanne Tellez or brought in Anna Davlantes, Sylvia Perez, Robin Robinson, etc? Were they specifically looking for a young African American female? Try and lure Karen Jordan from ABC and reunite the old team. Maybe the ratings don't jump, but at least there'd be SOME buzz over any such arrivals. The way they welcome and send off anchors reminds me of how things are done in sterile, sub-100 markets.
Throw in the fact that CBS 2's newscasts lack any signature quality, instead opting for a bare-bones product, and you can see why no one watches, or even cares that they exist. ABC 7 has flash and familiarity. NBC 5 has investigations. WGN has Skilling. CBS 2 has jack squat.