I'm not sure "irony" is how people would describe a radio station that called itself "no stairway to heaven," explained that it existed to put together great songs people have missed because they didn't get constant airtime, and then repeatedly played songs that get constant airtime everywhere because there's a reason those songs get played everywhere.

I actually think a comm to promote unknown or lesser-know fic would be a wonderful thing (if difficult, in practice, since defining what constitutes unknown is not an easy task), and the comm's name and description make it sound like it that's what this is. And that's very much not what it is, if well-known and popular fic is also solicited.