> Nintendo has always thrived on underpowered hardware.
Correction, Nintendo has more specifically thrived on cheap hardware, which is often correlated with 'underpowered' but does not mean the same necessarily. The Wii's remote wasn't 'underpowered', but it was relatively cheap and added an interesting feature.
> Why? Will it make the games more fun to play? Does it enable more fun games?
These are not the only (though they are important) factors to consider. With a portable platform, battery life, size, weight, heat, all matter much more than with a stationary console. A 2x more powerful Switch with the same power envelope as the original would be able to play games for longer using the same battery due to being more efficient. If you're playing a significantly demanding game, that might mean the difference between only being able to do short sessions on battery, and being able to play for a satisfying amount of time. Or it might mean that you can play it with the screen at a higher brightness, and thus make the game accessible in more environments.
And if the games are have performance issues, having more powerful hardware can make those problems less frequent and more bearable. You can argue that gamedevs need to do a better job, but that doesn't eliminate reality where most people just want to play the game and don't particularly care about the specifics of how to get the best experience.
> The Wii's remote wasn't 'underpowered', but it was relatively cheap and added an interesting feature.
I'm not sure why you mention the controller or how to measure its power, but the console itself was definitely underpowered compared to PS3 or X360. Heck, it was comparable to 6th rather than 7th gen.
That's my point exactly - you can't measure it's power, yet that one feature made the Wii sell like hotcakes, and caused both Microsoft and Sony to try making their own versions.
Correction, Nintendo has more specifically thrived on cheap hardware, which is often correlated with 'underpowered' but does not mean the same necessarily. The Wii's remote wasn't 'underpowered', but it was relatively cheap and added an interesting feature.
> Why? Will it make the games more fun to play? Does it enable more fun games?
These are not the only (though they are important) factors to consider. With a portable platform, battery life, size, weight, heat, all matter much more than with a stationary console. A 2x more powerful Switch with the same power envelope as the original would be able to play games for longer using the same battery due to being more efficient. If you're playing a significantly demanding game, that might mean the difference between only being able to do short sessions on battery, and being able to play for a satisfying amount of time. Or it might mean that you can play it with the screen at a higher brightness, and thus make the game accessible in more environments.
And if the games are have performance issues, having more powerful hardware can make those problems less frequent and more bearable. You can argue that gamedevs need to do a better job, but that doesn't eliminate reality where most people just want to play the game and don't particularly care about the specifics of how to get the best experience.