I'd take that chart with a big old Grain of salt, since in that interview said... Really? Read this chart. I'll not argue their price or value but saying only do one thing is ridiculously misinformed.
http://www.nintendo.com/amiibo/compatibility
"On using the Mario amiibo to get a Mario hat for your Inkling…
Nogami: It is true, after all, that in the world of Splatoon 2, this is a world where the human civilization has fallen away and it’s been 12,000 years of evolution since that time. It could be that if someone were to uncover or excavate a hat like [Mario’s] that it may be possible. We can’t cancel out that possibility entirely. It’s also worth mentioning that you can use the Splatoon 1 Amiibo in Splatoon 2."
That says to me they MIGHT add functionality after the fact. I'm going to say probably not until Christmas and they might uses new amiibo.