Great trip report. Reminds me a little of when I climbed it last Labor Day Weekend. I went up the scree field on the right just past the lake, then Went to the obvious impassible notch above the snowfield, then finally found my way over the loose ledges on the real route.
That is a beautiful area. I wonder how much snow it would take to turn that snowfield into an active glacier.
If you don't mind me soliciting, if you have any photos of your climb, I'd love it if you would post them on the Mt. Bretherton Page on Summitpost.org. My own photographic contributions for that peak are a little on the meager side.
Dave