So very little information has been released regarding Nintendo's online Service. The same few users seem to keep popping up in every post stating guess work as fact. IE "No in console voice chat only through phone app" but then we have dedicated switch headsets for sale which seem to contradict those claims.
The other one going around is "a game for only a month then" however I have some doubts about this for example say Donkey Kong snes version is available for One month on 1st April for one month. Well what happens if I download it on say the 28th do I only have a couple off days to play or is it one month from the day you download. Alternatively is it just a one month window to download the game, once downloaded it's yours to keep whilst subscribed!
Either way if you only get one month that's plenty if time to complete most snes games I would assume. ( Also I hardly ever play the games I download on PSN they are normally just little Indie games