What i find to be cool about the switch is that you can still buy hardware game cardridges. I don‘t see a reason why these cardridges wouldn‘t work in 20 years anymore. I also never had issues playing the games offline.
Yes, your wife and your kids will be able to have seperate game progressions. I think you are able to create up to 8 of these „profiles“.
reminds me of apetor, rest in piece