That station could broadcast from 6.30 a m every morning for about 2 hours then more and more. It would be important almost to make people listen until they get used to it. It could be a successful way. There are a lot of dialects and many people don't understand literary Mordvinian. On literary of course.
Many languages have dialects.
It's not a problem. Many people here speak their own way. I should say you have the University staff Mordovian, newspaper Erzyan Pravda Mordovian, Erzyan Mastor Mordovian, and a lot of others in newspapers, organisations and various social groups. Now I plan to make my Russian better. Your wife is Erzya.