Good luck with that. Radio has enough struggles competing with streaming smartphones and the gold rush that is digital ads. Adding more channels for LPFM's to fail, or more esoteric formats that struggle, doesn't do anything for radio. Commercial or non-commercial.
Great, time to put your money where your values are. There are plenty of small market stations available at bargain prices without petitioning the Commission to expand the band. You should get out there and show all of us greedy bastards how it's done.
I saw these concepts actually implemented during my 5 year tour with Emmis in Buenos Aires, Argentina. That is a market about the size of New York City, but at the time there were over 200 FM stations and about 25 AMs.
There were community stations that covered neighborhoods. There were suburban stations that covered the equivalent areas of the counties in the New York metro. And there were lower power AMs from 1610 to 1700. Finally, there were about 12 really good AMs (50 to 100 kw) and about 18 full market FMs.
But the two Emmis stations, well researched and programmed, took over a third of the total audience. The next ten stations along with the Emmis ones represented over 95% of all listening. When you added in the various government stations (several FMs, all tango and all classical, and an several municipal or governmental FMs) you had about 97% of all listening.
The other 180 or so stations, run by unions, political groups, colleges and schools, cultural and art groups, alternate lifestyle groups and just people who wanted to play their own music libraries did not even register any audience. Many of them went through multiple operators in the years I was involved in the market, as in nearly every case the volunteers tapered off their hours and eventually left the operation and someone else with a magic formula came on to occupy a little slice of the dial.
Consolidation in the US took place because such a high percentage of stations were not able to make money to sustain their operation. The cause? Docket 80-90 that expanded dramatically the number of stations, particularly in smaller and medium markets. Nobody thought to consider that the available ad revenue or the potential non-profit donor base did not expand proportionally, so stations in general were worse off than before unless bunches were grouped together where new technology allowed vastly cheaper operation.