No one is asking for? Two problems with that...
One... no one knows what they don't have until you show them or you create it. The Wii Remote is a key point. Wildly popular yet would have been dismissed as "no one asked for it".
Two... The Switch is what everyone is asking for: Portability. Phones, tablets, etc. People want to do stuff on the go.
You can blame a "rabid fanbase"... but it would't be such a large fanbase or such a rabid fanbase if they weren't being given what they wanted - whether or not its asked for.