Josh Green wants the superdelegates to decide already:

...by declaring now, rather than in late August, the superdelegates can arrive much sooner at the point where the winner is clear -- the only means of halting the damage to their party. In Washington, there's no happier situation for a politician than to be doing absolutely nothing and getting great press for it. But let's be clear about one thing: keeping their powder dry profits the superdelegates, but comes at the expense of their party