We've been discussing covariant return types again and wanted to present some good numbers as to how many people really want this feature. i.e. is it just crazy old me, or do other developers hit this.
If you do want it, please go to http://lab.msdn.microsoft.com/ProductFeedback/ViewFeedback.aspx?FeedbackID=FDBK16960 and vote for this feature. We can then get a better sense of how important it is when we do our planning.
(oh, and if you do want other stuff, let me know). This is just one of my personal mini-crusades right now.