Just got back from my Zion trip yesterday. We didn't do the West Rim because the ranger said that the road up to the top of the trail was impassable, and my brother wasn't interested in hauling a pack up from the valley floor for an in and out trip. We ended up going to the east entrance and camping about 3 hrs in with a great view of a valley.
There was still snow on the north exposures, but we only walked through patches of snow on the trail at 6500 ft. Mud was more of a problem, but that was drying up and not really a problem, just a little messy. We hiked through Echo Canyon, up to Observation Point, and then down into the valley. Didn't see anyone until we got near Observation Point.
I thought the west rim is at the same elevation as the east side, so it seems strange that the rangers were talking about postholing through 1-2 ft of snow.
Trip report to follow...