Yeah I'm sure multiplayer would be fun! Although I haven't subscribed to the online service yet and probably won't until New Horizons.
What kind of games do you play on PC? I rarely play games on Steam. Usually just on PS4 or my 3DS. I think I've only played 3 proper games on Switch now (BotW, Odyssey, and Builders 2). On PC, some of my favourite games were Limbo, Inside, and Little Nightmares. I also played Left 4 Dead a lot and was addicted to Stardew Valley but apart from that, I don't touch my computer for games lol.
Can't wait to see when you finish your build!