I had the same question this year when I went. I consider myself a level 7-8 skier. I was by myself, and I always ski more conservatively when alone. Went up on a bright day with good visibility and pretty good snow: it had snowed two days before and the tram had only been open for one day. Liberty was bumped fresh crud at a pretty steep gradient -- completely do-able for a strong intermediate/advanced skier. It reminded me of black runs at Alta, but much more exposed, which
was a bit spooky. I skied deliberately, loved the experience, and even went back for more and explored one of the easier chutes.
But those were really pretty good conditions.
If it were white-out, frozen, used-up snow, or otherwise contrary conditions I would definitely skip it and advise strongly against. You want to maximize your chances of having a good time. Sunny, soft snow: yes. Anything else: not worth it.
Pics enclosed if that helps (remember pics minimize steepness).