I would love to have one of those amiibos but no im not really excited.

I do.

I pre-ordered wave 1 and 2 on Amazon last week :)
On top of being very nice collector miniatures I believe they can do some cool stuff with them in game (WiiU or future console)

Other than the Captain Falcon helmet in MK8 it's been pretty meh. I think it can still sell was as collector toys but some of the models' faces looked worse than their prototypes.

I was already pretty much sold on the Smash Bros amiibo's primary function as a trainable npc, unlockables in different games are just an added bonus.

I do wonder what the Mario Kart 8 specific amiibo will bring to the table, I'm hoping for some sort of Double Dash mode to be added.

It's a cool concept, so long as I don't get games where it takes owning the figures to unlock really cool content. As in that's the only way.

Great use for smash
Mediocre use in MK8, just mii costumes
And Hyrule Warriors, well, they literally just give you a random item. It would be awesome if you could actually play as the amiibo, would love to play as kirby in Hyrule Warriors

It's just a CPU character in Smash how is that a great use?

Because you can level it up to lvl 50, then fight against it or team up with it

And you need a figure to do that?

Not even a little.