Last time I got to that junction I ended up going up to the Allison Mine thinking it looked more promising and vowed never to go again. So far I've kept my vow. I know you asked about the route to Eagle but if the trail up to Allison, as described in John Robinson's book, is any indication it hasn't been maintained for years and it is badly overgrown. When I got back I looked like I'd been in a cat fight. I don't think this area gets much attention outside of the route up Iron Mtn. I think it is remotely possible that one might get to Eagle from West Baldy. Very speculative though without some careful study.