I don't expect it to happen, simply because few who are at U2's level are willing to downscale to such a degree. However, it's something that a lot of people want to see happen, and I'd like to think that U2, if they want to do something different, will consider doing a smaller scale thing. As I said, it would go a long way toward regaining some of the credibility they lost from critics/certain fans and provided they do multiple nights in one city, the biggest fans would get to see their favorite band even more up close.