Well remember this is just for what will be the highest level part of the park (essentially the main line on the right side). It will filter out a lot of people, especially the random people that just happen to go through there once in a great while, which arouse the most frustration, since theyre the ones usually bringing their 5 year olds through there and such. Plus, little ski school groups probably wont invest the time, which is an added bonus.
The rest of the park will be free to roam, which is good, but having a nice filter could certainly facilitate such delightful features, and ideally, at earlier dates (rather than say march or april).