I like the idea... Whether it comes to fruition or not is a completely different story.
I've said it multiple times before... Even if they renovate the Ralph, in 10 years, it's gonna be obsolete again. I read a prefect analogy on this: How many times do you fix an old, used car before you just bite the bullet and invest in a new one? RWS will be 40 years old next year... That's ancient in NFL terms.
While I understand people wanting Bills games to be an open air environment, this isn't the 90's anymore. IMO, any "weather advantage" they had is gone and has been gone for a while. Also, keep in mind, per NFL rules, in retractable roof stadiums, the Home Team gets to designate whether the roof is open or closed. So, if the Bills really felt that the weather would assist them, they could elect to have the roof open.
As others have said, a retractable roof opens doors for a multitude of events including, but not limited to, Concerts, NCAA Tournaments, Soccer World Cups, WrestleManias and Super Bowls.
Finally, who gives a damn what Russ Brandon thinks? I'd about bet that his days with the Bills are just as numbered as Ralph Wilson's. In other words, once Ralph is gone, Brandon will be as well. This is obviously a plan for after Wilson is gone, as this sort of project would take a few years to complete.
-Bill