It would work like the 4 Player Mode on xbox but you have 8 controllers (normally 4 but you can split the joycon) There are already games with 8 Player mode on switch like runbow). Can't help you with switch porting but I think there would be a market for your game. It's perfect for Couch coop and Single screen mp with 8 Player would be amazing.
I am a big fan of indie games with new game mechanics. Also I like Couch coop. So I would always like to see these kind of games for a bigger audience. The Xbox Indie programm was a nice way to explorer new games. Switch seems to be a great console for your game. It is polished and Haß a great mechanics and 8 Player mode is rare on switch.
Yes, I think Lk2 can fit well on SWITCH (better than on XboxOne or on Steam)
After some research, It should be possible code wise.
So I'm starting the process to become a Switch dev.
If they accept, I will put LK2 on Switch! (not sure for Pioneerz)
Now, wait and see!
(I already can make game for WiiU or 3DS, but I'm not really interrested for now)