i think something that can partially account for this is the lack of balance at sim schools. sims frequently have 6-8 seniors, or an entire team of seniors and juniors. if the lack of balance is on an odd cycle like this, then it would make some sense, if the stars aligned, for this to be the case. honestly, i've got no idea. it is odd though, because as i look around the miaa and glv, i see a higher # of openings (i think, anyways).