Indeed, why. The OP poses a great question and I think the public is entitled to a detailed answer.
To the extent that a new stadium would be financed by the new owner, that cost/debt will be passed on to the ticket buying public in the form of PSLs or higher ticket prices. On the other hand, if the new stadium is publicly financed, then it comes at a direct cost to the taxpayers. Either way, the public should be provided a clear understanding of why this cost is necessary.
To his credit, Mr. Wilson keenly understood the economics of the WNY market and realized that a new stadium was not worthwhile. At a certain point, depending on how it's designed and financed, a new stadium could drive ticket and premium seat prices above what the WNY market can bear, and if that happens the new stadium could actually become a financial drag on the franchise. As a season ticket holder, I'd want to know what the impact of a new stadium would be on my ticket prices BEFORE ground is broken.
I may seem like I'm contradicting myself but I am NOT in favor of Patrick Gallivan's bill that would make the stadium committee's deliberations public, as I fear this would dramatically slow the process and possibly grind the momentum to a halt. I have no problem with them making the sausage in private, as long as taxpayers have been provided a clear and detailed explanation of how a new stadium better supports a WNY franchise.