LonelyGreyWolf
Banned
Technically it's not their first "season pass". They've packaged DLC packs together for a discount several times before, like with Fire Emblem. This is just the first time we've known about it and able to buy it before all bits are out.
No, they haven't done a "complete" edition. Nintendo maintains that their games are complete without the DLC and that the DLC is an optional extra. That's why, instead of DLC, they call it "Add-on Content"
DLC and "Add-on Content" are literally synonyms. And packing DLC together for a discount is not really the same thing as a season pass, even if the principle is similar. Well, I guess time will tell whether they'll make some sort of complete edition.