From my point of view regardless of what system it was originally intended for, a new Zelda game is a system seller. The problem is that while the Switch hardware is pretty cool and will presumably provide some pretty novel functionality for a lot of people, ultimately what makes or breaks any game system is the available software. In this day and age the online ecosystem also plays a role, and based on the reveal conference the Switch has some real problems in both the online and software arena. The Switch itself ships with nothing playable, which to me is a big mistake (not to mention the list of launch titles thus far revealed is woefully inadequate). Wii Sports was included with the Wii and gave the system purpose right out of the box. I have my doubts about whether people will be as keen on paying another $50 on top of the $300 for the system for the "1-2" package of games that looks VERY underwhelming.
“The greatness of a nation and its moral progress can be judged by the way its animals are treated.”
- Mahatma Gandhi