“There are lots of places with an Orthodox shul, an eruv, and maybe a mikvah in our region. There are only a few actual substantial communities with adequate conveniences.”
First of all, any community that has an Orthodox shul, an eruv, and “maybe a mikvah” has its priorities seriously mixed up. Building a mikvah should be top of the list according to the Gemara.
Second of all, I’m curious: what is your idea of “adequate conveniences”?