@sunperch shame on me for assuming, haha.
@Chad_Scott, IWSF allows anyone 18+ to ski 58k and you are lumped with all people skiing 58k, at 35 you get to make the choice but are not forced to go 55k. ZBS allows for people not to slow down, similar to IWSF, it just puts them in the same division. At our L class tournaments we have had multiple skiers 35+ compete at 58k just because the score would actually count as such.
There is a lot of concern in this thread about how the L9 guys will be affected, but this is a very small portion of skiers in our sport. I know quite a few people that shorten the line below their max speed for safety and for their own enjoyment. I know others that prefer to go faster than their capped speed for the same reasons. As @MISkier has said, it just makes the faster speeds count. If you are really in the running to win you are going to do whatever is necessary, but for the other 95% of the membership, they are not going to go 36mph to get a small advantage at the risk of getting hurt.