I think Gmyers is at least partially right about the two strategies, quad versus back-loading. I just checked out the jump layouts for the top 14 skaters at 2010 worlds (men's LP).
First, the quad is alive and well. Nine out of the top fourteen attempted a quad. So I do not see any support for the claim that the CoP discourages skaters from trying it if they can.
Of the five skaters who did not have a quad (Chan, Brezina, Rippon, Contesti, and Amodio), all five put only 3 jumping passes in the first half and 5 in the second half.
For the nine quadsters there was greater variety in the placements of jumps. Three of the nine (Joubert, Schultheiss, and Reynolds) had 5 jumping passes in the first half, 3 in the second. Three (Abbott, Kozuka

, and Voronov) did 4 and 4, and three (Takahashi, Van der Perren

, and Fernandez) did 3 in the first half, 5 in the second.
So, I am not sure what all that proves. There seem to be many choices for a skater trying to maximize his strengths and point totals.
Thank you
mskater93 for the great post about edges on jump takeoffs, post #112,