I am really supposing they will add more games, and a new system every year.
I can see getting GB, GBA, SNES games in the following years.
My girlfriend lives 2000km and we are always trying to find online coop games on switch. I realisticly see I playing NES games with her, sharing the screen.
We already use voice chat on phone all the time, and we would keep using it on phone even if there was a native voice chat on switch.
The service seems to fit my needs very well.