Some intriguing thoughts. I have to travel to Minden NV from time to time, the town is not for me - a desert. I will look harder at S. Lake Tahoe, I may spend an extra few days there on my next trip.
Boise Id or Idaho Falls are interesting. Never been there but will give it a look.
I like NH but property taxes are pretty high and services are a little scarce.
If the property taxes in NY were not out of control I would stay here but like som many others, they are going to tax me right out of the state.
The peoples republic of Vermont is a none starter, although beautiful - it would be hard to retire there.
Health insurance is somewhat of a factor but not much - I am lucky, I will have worked for the same company for 40 yrs and still have a defined benefits plan.
I do want to be close to my kids, my older daughter is mobile and can work anywhere, my youger daughter is too young to know where she will be, but if we have settled on a retirement location she will have that option as well.

Texas & Az are not even on the radar screen. I lived in Tx and have visited Austin, Dallas, Fort Worth & Houston, none appeal to me, I know nothing about West Tx but can't see as it will appeal, too far south - like Az or NM.

At some point I am going to need to determine a process by which I can narrow choices and decide.