Harvest in that zone is down 50% since 2006 and the total number of elk has dropped by about 3,000....F&G will tell you it's a combo of habitat issues and predation....I lean more towards predation myself.
There are very few areas of Idaho with increasing elk numbers right now, but there are a few places that are looking pretty good still population wise.
Myself I'd like to see them make it so if you harvest you have to take a year off...yeah that would suck kinda but I believe it would help the elk recover some, 10 years down the road the sacrifice could very well be worth it.