I'm not sure why the backload jumps are discussed here, though interesting, but...
1. I don't mind the extra 10% on late jumps. It's a fact that skaters carry risks in the second half, and...
2. ...skaters, while they'd prefer scorewise to backload jumps, also know that it's still risky. In fact, chasing that extra 10% doesn't garantee 10% bonus, since the risk is about rate of succession. One may, and more likely if the jump is hard (=more points), to fall/UR/step-out/pop/downgrade.
3. For the reason in #2, without the late bonus, more skaters would choose front-loaded layouts; it's keeping many skaters from being too safe.
4. Jump layouts also affect choreography because they are part of it. An unbalanced program means an ugly choreography and presentation. Unbalancing jump layouts does have its sacrifices. (I think the overall balance should be more reflected on scores, though.) If backloading jumps actually is better for a certain choreography, then go for it! Creating such piece should be artistically rewarded, and not to mention, the execution of such a technically demanding piece should be given the score! Of course, attempts and perfection are two other things, and should be reflected accordingly.
5. I sometimes see a program and think, in an artistic perspective, "that jump is unnecessary", "no jumps are necessary", "that would look better singled", "maybe she could pack 111 jumps for this program", "a 2A-2Lo-5T in the middle of those steps would look good...". I digress.
6. But this subject is digressing anyways.
People, this is why we need an artistic figure skating. We need more shows. And we don't have the time and money, sadly. Also, if I had the money and superhuman being, I would love to choreograph a program that features 110 jumps within 5 minutes, arranged in a pleasantly artistic way.