I guess there's nothing wrong with dreaming big, but those are some pretty high expectations.
The Wii was lightning in a bottle, the odds of lightning striking twice (especially with Nintendo facing decline on both ends) are rather slim right now. Either way, I wish Nintendo the best. I already got my Switch pre-order.
Only way I see this happening is if 'switch' is like ~10 different hardware iterations that last 15 years (switch, switch mini, switch tv, switch pro, Switch plus, switch advance, etc etc) and they all share the same 'library' and 'ecosystem' and so nintendo classifies them all as 'switch' hardware sales.
It doesn't seem to have anywhere near the penetration potential as the Wii did.
The Wii was a brand new way to play, as much as that panned out or didn't, it was perceived as this entirely new thing that the entire family could get behind. I don't see how a hybrid home console/hand held offers the same.
I don't see the average mum and dad getting excited about actually playing the switch the way they may have had interest in the Wii, for example.