On Australia doubling fees for liberal arts degrees

Sounds like a great idea. Increase liberal arts fees and decrease STEM fees.

What could be the consequences good or bad?

Less women doing college - but it's already empirically proven that women don't really push for STEM (and no, it's not only due to sexism).

Less degrees overall. This is maybe a good thing, since people are going to college without thinking what they really want to do (not having a plan).

More people doing vocational education, since it's not so easy to go to college for that arts and humanities degree that you'll be sure to pass.

Finally, waking up people to the fact that it's not so necessary to get a college degree for most professions on earth anyway.