So, I was crunching some numbers this evening and came up with this...
With WBBM's switch to new graphics tonight, the 4 non-WLS stations in town have changed graphics approximately 9.5 times, meaning that 13.5 packages have been used and/or retired since the Hothaus look debuted in June of 2005. That half package represents the mid-cycle refresh (digging out the car lingo) WGN did in 2011, redesigning the L3's and bug, and heavily updating the opens. The others include the tail-end of the WMAQ Novocom package (unless that had already been changed), Look A and Look F, WFLD's in-house package and 3 standard looks, WGN's pre-HD look, and WBBM's blue graphics, 'Heart of Chicago' and two network jobs.
And let this one sink in for a moment. News Series 2000 Plus has outlasted/existed alongside almost THREE DOZEN other themes on the other 4 channels.