I predict that every time the favicon changes, the consensus will be that the change is bad. Then after a week, nobody cares any more. So what should Google do?

I predict that every time the favicon changes, the consensus will be that the change is bad. Then after a week, nobody cares any more. So what should Google do? Never change it, ever? I would recommend that the new favicon not be judged until you have had some more time to let it sink in. After all, if you do keep one favicon indefinitely, you will spend a lot more time familiar with it than you will surprised by it.