You're right - Wii's strength was local multiplayer, whereas Vive is more of a conventional online multiplayer, considering you need a separate Vive for each person. If you happen to have 2 Vives nearby with enough space, I imagine it's fun, but you're still inside your own world, so a mic+speakers/headphones is all you really need.

There are some games where another person can participate outside VR (Keep Talking and Nobody Explodes), but it's not really the same at all.