If you want/like some sort of "I wanna play almost every Nintendo consoles" in one device, yeah, the Wii U comes ideal if it's hacked. From NES to Wii U (home consoles) and GameBoy to Nintendo DS (no multiplayer+no DSi) everything is great/plausible native played or emulated. With retroarch, a world of emulation can be expanded to another devices/consoles with the cross-platform netplay. I used to play multiplayer NES, SNES and arcade games via netplay between my Wii U-Switch or Wii U-Vita and it was pretty fun.
Behind scenes devs are still doing great things for the Wii U homebrew and I'm sure good stuff is coming for this fantastic console.