You probably don't wanna use it for 2D games, so hopefully you still have a Hori Game Boy Player Controller lying around. It works great for Mario + Rabbids, and I don't foresee any real problems with Xenoblade 2 either. Doom has to be played with Z for shoot, and Zelda would be problematic until we can get button-remapping. In any case, it's clearly not the end-all-be-all solution. With a little bit of luck Nintendo will allow for system-level button remapping like Sony, but we probably shouldn't expect that. This means that in Mario, the triggers are basically useless, and you need to long-jump and butt stomp using the Z-button.
Unfortunately it registers L/R as L/R, when it probably would've been smarter to map those to ZL/ZR. That said, you can keep both the Joy-Cons and the GameCube controller active simultaneously, so even if you do run into a game where you need the Minus button, you can still hit it on the Joy-Con. The first game I tried was Mario Odyssey, which works pretty well because Nintendo allows you to register the map to Up on the d-pad (coincidence?), whereas the default is the Minus-button not present on the controller (Start is mapped to Plus, of course). Took some doing to get it to work, but it seems to be fine now. With the controller they were made for, you and a friend can play your favorite N64 games together. Wireless controllers work with the original N64 console, but they also come with adapters that allow them to work with the Nintendo Switch as well. So how's everyone's GameCube controller experience been? I finally received my adapter from China. Does N64 Controller Work On Switch Retro-Bit Tribute 64 is a great choice for me.