imo amiibo work best when they offer small cosmetic incentives to "use" the amiibo in the games they're compatible with, such as how using, say, a Sonic amiibo grants you a Sonic design in Yoshi's Woolly World.
I agree, but I can also see why Nintendo is pushing the envelop. I mean, Sony and Microsoft, Activison, EA, UBIsoft, basically the big players, have been finding ways to bend over the consumer and milk them dry. Consumer complains, invests anyway, complains some more, invests some more...these companies make large as bank.
Meanwhile, back at Nintendo, through out the Wii era everything came on the disc. DS, the same. Wii U, out side of maybe 3 games(?), same thing. I do not know if it was incompetence, or respect towards the gamer (Iwata), but they were obviously losing out on a lot of cash with this model. I mean, look at the Sony and Microsoft platform. Consumers were spending money, not happily, but doing it anyway!
Bring in amiibos. Sure, they can make things cosmetic...but what is so desirable about that other than collecting them? Add some functionality? Modes? DLC like qualities? Better yet, these are not one time investments, an amiibo can be used to unlock content in other games as well.
The idea, in theory, seems fun. The execution, however, has not been so great. Availability has been an issue. Also, secondary functions have also been lacking.
They do have a market with these, but Nintendo has to find a way to make they desirable to everyone.