Homebrew Suggestion Private Server for Banned people?

[The Real Jdbye]

Would it be possible to make a private server so people that are banned from nintendos servers can still play online? kinda like Wiimmfi for the wii.

For sure.
SwitchBrU has already recreated some parts of the online system, I see no reason why that couldn't be extended to support online play as well.
But most people wouldn't be using it so you'd have a hard time finding people to play with.