I've got to say that despite the bug here and there I am really been enjoying using Whidbey as my everyday development environment. One of the neat features that caught my eye this week was the snapping to edges that the Windows Forms designer now does.
Notice the fine dotted lines between the top and left borders of the button and containing form. It actually goes a little bit further than that allowing text baseline alignment of windows controls using the mouse.
One thing that seems to be missing is the ability to do this snapping on all sides. It seems once it is snapped into one position you can snap on the opposite corner or side. It would also make sense to me for this snapping to lead to anchoring - maybe some kind of smart tag which is context sensitive. There are smart tags on many of the controls already.