I was in a setting this weekend where the top of the athletic department was asked about the status of the Shield logo, and I wanted to pass along what I heard.
The main idea is that the DIA acknowledges that while the Shield is still officially a part of the brand, its' phase out is a result of discipline in maintaining brand consistency waining as the years go by since the 2014 rebrand, which is a natural cycle. This is due to two factors: 1) the DIA's gradual deference to the coaches' branding preferences within their programs (tennis / soccer love using the Shield; Bielema just wants a Block I); and 2) the hugely-positive response to the cursive "Illinois" "logo." As far as a department-wide decision, the Shield has not been given a vote of non-confidence.
There was also an acknowledgement that the department has been very lax in other branding instances, with the example being that the basketball team wore black team-issued sweatsuits to the Tennessee game, while black is of course not an official color. Moving forward we can expect that not to happen.
The takeaway is that both consistency and flexibility have their merits, but to balance things out, we can probably expect a "branding reset" in the next few years to bring us back to the other end of the cycle where we establish a core branding identity. Now, what this means for the fate of the Shield is unclear. It was not implied whether the Shield will be kept, eliminated, or replaced, although it seems safe to say the Shield will not be used anymore in football or basketball as long as BB and BU are in charge.
If I had to guess, because there is now an open acknowledgement that football and basketball are the necessary priority, maybe the Shield will be removed from the official brand department wide because it isn't being used in revenue sports. Although, who knows, maybe they maintain the status quo and keep it as a secondary logo and leave it up to the respective teams. I am certainly someone who prefers "brand flexibility" over "brand consistency." But it does sound like a "light reset" is coming, so some changes are likely on the horizon.