You want my opinion from a "backwoods" department? A few things need to happen.
1. Allow radio techs to get "certified" to add radios to WISCOM. The biggest problem is a lot of agencies have their own radio tech and when you apply for WISCOM syskeys, you have to "prove" you can program. When asking how you can "prove" it, they do not have an answer. Supposedly the state is working on some course.
Most agencies have an in house radio guy, and while I'm not advocating just any Tom, Dick, or Harry doing it, there should be a process.
I have about 50 radios additional I could get added to the system from multiple departments I currently maintain, but they won't answer my question on how I can prove that I know what I'm doing.
2. The STAC/RTACs are great, but give each agency an incentive to join WISCOM. Give them their own TG for free. Let them see how the system works.
When I asked how much one TG would be for an agency, I could not be given a definitive answer. The reply was "you should use an RTAC". After a straight line wind event, it's not uncommon to see 10-20 different FDs out. FG Blue & other statewide channels were so overloaded after the last storm, why would the RTACs be any different?
3. Instead of promoting "You can talk from Superior to Madison" to departments, show them the coverage area for their response territory. I know our agency would benefit with INCREASED coverage over our conventional system(s).
4. Finally, actions are louder than words. When I hear from State Agencies (DNR, WSP, etc) that they are holding off, or it's not working for them, etc...why would I want to migrate to the system? Add more tower sites and make the thing have great portable and mobile coverage anywhere.
MN Armer is working well with the majority of state and local agencies are on it already...but they are ten years ahead of the WISCOM system. Talk to them, see how they did it.