I wish some hunters from Idaho would speak up on this issue.
Idaho used to have a system similar to that in MT. Most units were general tags and the seasons ran through the rut."
I have hunted Idaho every year since 1970 when Idaho had general tags and a two buck limit in the Snake River Units....especially Unit 13....in those days you could shoot mature bucks every year, with a little bit of effort. But, all of that has changed now.
I used to hunt the Snake River units, 11, 13 and 18. I carefully tracked the population data kept by Idaho Fish and Game and it was interesting that all three of these units had almost the same post season buck/doe rations as well as fawn counts. However, each of these units was different in its own way. Unit 11 had a lot of private land and was easy to access, but was a limited entry unit. Unit 13 was nearly all private land which limited access. Unit 18 was mostly wilderness and Hell's Canyon NRA where the rugged, remote country limited access. Big, mature bucks could be found in all three of these units in similar numbers annually.
As hunter access and proficiency (more long-range rifles, backpack hunters, jet boat access, etc) changed and the mule deer decline began for all kinds of reasons, Unit 18 went to LE and finally Unit 13 went to a 100% drawing and finally to LE. Today, all three of these units have similar population dynamics and hold a few mature bucks, but all three have significantly less mule deer now than they did 30 years ago for all of the reasons cited today related to the overall mule deer decline.
In my view, Idaho has done a good job of providing balance in their management efforts. It's LE system has been beneficial the mule deer populations in selected areas of the state and provides mature bucks for those who participate in the annual drawings. On the other hand, Idaho has a good number of units with general seasons which also hold good number so mature bucks. It has other areas where hunters who want more opportuntiy can find "any buck" with a little effort.
Idaho is one state Montana can look to for examples of what might work here. In the end, whatever we implement in Montana must work for Montana's various user groups and most of all the mule deer.