Not a big fan of these programs...
...I'm not super familiar with how it works in Montana, so I won't comment on your specific proposal. However, we have a similar program here in Idaho called "Access Yes", and in my opinion, it is a bit of a scam. Many of the properties in the program aren't very good quality hunting, and they are poorly distributed around the state. Almost all of them are in Southern Idaho, which doesn't help us much here in North Idaho.
After hunting a few of the Access Yes properties and researching others, I came to the conclusion that the program benefits land owners more than it benefits hunters. With this, I really don't like the idea of all hunters being forced to pay for a program that only benefits a few, especially when those benefits are marginal. The people that use them should pay for them. Plus, having more money is also no guarantee that good quality land will get added to the program. It also creates the risk that landowners who allow public access on their land for free will start demanding money. This could be a problem in the case of the large tracts of private timber lands we have here in Idaho, which are currently open to the public
Again, I am not familiar with how it works in Montana but I think the Idaho system demonstrates some of the weaknesses and risks that come along with these types of programs. Something to consider.