To principle of Amiibos.
I've bought the first link to test first, as what is and what you can use the Amiibo or even needs. In Smash Bros., it is so that you lvln the Amiibos, feed and may be struggling.
Somehow a Pokemon system.
In Hyrule Warriors eg you get a new exclusive weapon (slider) when the Amiibo Link holds to start on the game pad and each additional day a random weapon for Link.
The Samus amiibo brought me 10x material.
The potential of Amiibos is not yet exhausted by far. In future games, such as "The Legend of Zelda" or a new "Metroid" are certainly of extras fitted which are accessible only with the Amiibos.
The Amiibos are not a must but for every fan and 100% gamers are the Amiibos be a nice addition.
