Permit pending but id like to try the Four Pass Loop in Colorado this summer. I also do a yearly camping trip at Blue Mesa Reservoir near Gunnison, CO.
I'm still a day hiker, usually up to 15 miles or so, but the Four Pass Loop is definitely one I'd like to explore as well. It is more about committing to buying the gear than anything else. I would be interested in your experience if you do snag a pass.