The #SteamDeck is so rad, it can actually emulate the WiiU fully. And I don't mean just running the games, I mean it can actually replicate the full experience, with dual screens and everything. This is great because the WiiU's second screen functionality is honestly pretty unique among consoles, and the SteamDeck existing means it'll continue to be experienced for a long while.
Also, games that heavily rely on the touch screen, like Kirby's Rainbow Curse, outright play better on the steamdeck than the WiiU, because you can map the touch screen to the touch pads like a trackball mouse. The worst thing about playing Kirby Rainbow Curse on the actual WiiU was how hard it was to hold the console in one hand and use the touch screen with the other. The SteamDeck fixes this.
Once Kid Icarus 3DS plays well, it'll be the definitive way to play it IMO.