It's really funny how ass backwards Nintendo can be some times, but in other ways, they can be unusually progressive. One of these ways is DLC- Nintendo might be one of the few companies in the industry that actually does DLC right.
They don't actually do it often, at least in the traditional sense (I guess downloadable events for Pokemon and Animal Crossing may be construed as 'DLC' but that's stretching it)- to my memory, the only major instances of them doing DLC so far were Fire Emblem: Awakening, Mario Golf, New Super Mario Bros. 2, New Super Mario Bros. U, and Pikmin 3- but when they do it, they do it right.
Take New Super Mario Bros. U, for example. When Nintendo offered DLC for that game, they didn't just offer a new world or a collection of new levels, charge $10-$15, and call it a day (as is the norm, usually)- they basically redid the entire game, created what could at least be a full fledged expansion pack, and at most be passed off as a quasi-sequel... and sold it for just $20.
With Mario Kart 8, they've outdone even that value proposition.
They have announced two new (incidentally awesome) DLC packs for Mario Kart 8, each of them offering eight new tracks, four new vehicles, and three new characters and costing only $8. While that is in and of itself some insanely good pricing, the real clincher comes if you get them together.
If you get them together, you pay only $12. You pay $12 for 16 new tracks, eight new vehicles, and six new characters. Just so you know, that is roughly half the amount of content the game shipped with (and since Mario Kart 8 had the same number of tracks and characters that every previous Mario Kart game has had, we also know there was no bullshit last minute cutting and holding hostage to DLC of content). Half the amount of content of a full priced game (veritably a full fledged expansion)... being offered for $12 (and you get some free goodies too!).
That is how you do DLC right. That right there is a value proposition for DLC that actually extends the value of the game, while adding value to it, while also not gouging the customer. Given the general trend of DLC in this industry, which is tending more and more towards microtransactions, this is absolutely amazing.
This puts Nintendo in the league of a few elite companies that actually seem to get DLC right- I'd say the other ones are Rockstar and Bethesda, who constantly get it right (arguments may be made for Bioware, Irrational, Gearbox, and Naughty Dog as well). This is something that should be acknowledged and appreciated without qualification (especially since so many of us are so eager to call Nintendo out on everything they do wrong). It's also a little amusing because a company as oblivious to the internet can get something so thoroughly 'online' so right...