I hope Nintendo does a trailer that just focuses on VR Garage.
I think people recognized it looks cool, but even analyzing the trailer a bit closer, there is some really impressive stuff you could be able to do with it.
For one, previews for the kit have said that all 64 mini games in VR Plaza are all games that Nintendo developers made with the VR Garage software! That means everything you've seen in those games, not only can you make it for yourself but I think you will be able to dive into the code of their games yourself and tweak things or maybe even copy it (I think I've heard someone say something to that effect) to make you own game with it. I know I've heard that there are templates of code that you can use for sure.
There are lots of cool stuff you can do with physics including liquids, jumping, falling, destruction, object interaction, etc. Just freeze frame the montage and there are a ton of physics we'll be able to play with.
This not only allows you to make games in 2D, but you can also make your own stuff for VR. There are some really elaborate levels Nintendo shows off with a variety of things that form the basis of full fledged games to quick little Wario Ware style mini games. From racing to a shooting gallery to puzzles to platformers to sports, you really are enabled in a huge way, and in a big step up from the original Toy-Con Garage.
It's also build on top of Toy-Con Garage, so that should mean that all the stuff you can do with controllers, gyros, IR, touch input, cardboard, music, SFX from before you should be able to do here. You could do some really intricate stuff behind the scenes with Toy-Con Garage, but being limited by the visual output meant that "video games" you could create would be very limited and it seemed to encourage more real world builds to be powered by a computer instead of the same interactive experiences you would have with the Labo Kits. Now that is no longer the case since the visual side of things has taken a leap from Game & Watch style games to being able to make modern 3D games with advanced physics.
People are going to be able to make some really awesome stuff and I hope to see not just cool video games and VR games, but games using real world cardboard input as well once again.