Yes, LE would be the best way to produce older and sometimes big antlered bucks. But as you all know there is more to hunting than big bucks and imo the goal should be healthy populations and age structure of the resource, not strictly large antlers. Not every area or region will produce large bucks even if they are growing old.
It would be interesting to see a draft of what a potential limited entry structure looks like for Montana, but regardless I think going LE across the board could be a slippery slope especially given how slow Montana moves with management practices. For example, My concern would be a scenario where deer populations materially rebound to levels seen a decade ago, but we are stuck in LE tag Quotas corresponding to current populations.