I actually agree with you that we need to wait, probably at the very least until NC & IN vote, but not past mid-June.  I'm an Obama supporter, but I think Obama needs to win in a solid way to help mend the party afterwards.  I think margins after NC & IN vote will be significant.

I don't, however, agree with you about Clinton being expected/favored to win in 75% of the remaining contests.  There are only 10 left.  Obama is favored in NC, OR, MT, and SD, and the last IN poll (admittedly a long time ago) had him up 15%.  Clinton is favored in PA, WV, and KY, and I'd even give you PR.  Guam is 50/50.