I agree. I know some fans are disappointed about the lack of Super Mario, but I honestly think Mario Kart is the right game to highlight at launch. 

It’s arguably Nintendo’s biggest IP, with a huge following in both enthusiast and “casual” circles. Plus it’s a multiplayer title, which will encourage people to recruit their friends and invest in NSO.

I have a regular weekly Mario Kart online game night with my family. My wife, brother, niece, and nephew all have a Switch and a copy of Mario Kart 8 Deluxe. I’m the only one with a copy of Super Mario Odyssey. I know this is wholly anecdotal, but I suspect this dynamic is fairly common.

They actually let you play as a Goomba in Mario Kart World!? About damn time.

Digital Foundry takes a look at the game and it's key improvements over MK8:

Of note, while the footage shown so far runs at 1440p/60fps, there is apparently a 120fps mode we haven't seen yet.

Prime 4 is one thing since it's an enhanced Switch game but if this is true it makes me wonder if Nintendo is gonna prioritize offering a choice between a high resolution or high fps for a lot of their games going forward instead of giving them fancy graphics. I don't recall any major first party PS5 or Xbox Series games that weren't cross-gen having a 120fps mode so this could indicate Nintendo taking a different approach by putting more emphasis on image quality and framerate than the quality of the graphics.

The game seems to feature customization, with screenshots showing different decals:

https://www.gonintendo.com/contents/47420-mario-kart-world-lets-you-customize-your-kart-with-decals

Hopefully, the lootboxes that contain the decals won't cost too much.

…lootboxes?

Just P2W stickers to boost the karts stats, nothing major.

The Direct is in lest than 24 hours.