Alright, so these are rough numbers but;
211 deposits + 100 outstanding offers = 402 total offers so far (given 70% yield).
Historic yield is around 55% so if the yield drops to 55% after June deposits (deposit 2) then we are looking at 221 matriculating from R1-R3, leaving 50-60 spots for R4 and wait listers. I believe I read that they generally take about 15-20 people from R4, so that would be in line with the historic numbers of 30-40 people getting off the wait list overall (keeping in mind some people have already been accepted off the wait list this year)
If the yield stays at 70% throughout the whole process (for arguments sake) Then we are looking at 281 applicants from R1-R3 matriculating, which is really too many, and would mean ZERO applicants from R4 and the wait list.
A compromise (62.5% yield) would mean 251 matriculating from R1-R3 and at most, 30 applicants from R4 and the wait list combined.
I guess we, the wait listers, should hope for history to repeat itself!