I do hope to implement this change for sketch as well - but it won't be too soon.
The real issue is we don't offer a lot of full term Adv Study Writing Classes (and they have smaller class sizes from our improv classes).
We try to offer workshops and non-show or non-full classes to satisfy people who want to learn more.
If you can't get into a ASW class I recommend writing a show or getting a friend to write a show with.