Is there a search function on the site? I was trying to find the thread about sub suggestions this morning, but I failed. ;-; I assumed it wasn't the yellow "word bubble" in the bottom right, but I didn't test that theory. Is that the search bar?

Anyway, my suggestion for a sub is something dedicated to people running lightning nodes. Some guides for on-boarding newbs (me), opening first channels, properly maintaining channels, etc. I imagine this has already been thought of, but throwing it out there in case it hasn't.