Ok, I'll start. My prediction is that the big guys, like Wieters, Price, Hanson, don't come up till after June 7th.
Remember the Super-2 time frame is variable every year, so if you are bring them up too soon you might pay for it later. Owners/GMsare fighting severe economic times. The actual economics of making a mistake won't hit for almost 3 years when the economy will probably be better. But since they are all thinking about it now, I'll bet they are gun shy so they don't make a mistake. Its a physiological thing.
(Injuries can change the equation. For example LaPorta's call up is like Ryan Howard's a few years ago where a team makes the move early because someone is hurt.)
So, while in the past Super-2 type players stared coming up around now, I wouldn't be surprised if there is a few week delay for the biggest prospects.
There are a few things with the New York Yankees that never change. That's pride, tradition, and most of all, we have the greatest fans in the world. -Derek Jeter, 9/21/08 -- last words from old Yankee Stadium