I think it's awesome!!
As usual.

not much to see yet
You're more advanced than a cockroach, ever tried explaining yourself to one of them?

more dance offs for kids

Because all comedy-scifi-comic-book-movies should be intellectual thinkpieces?

A popcorn movie that will have quality like the first film.

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True. I was hoping we'd get a slight glimpse at Ego or any other new characters though.

As a teaser I think that it works well. It does not spoil anything about the film and gives people a reminder of the characters and the good feeling tone of the movie.
To make a great film you need three things - the script, the script and the script -Alfred Hitchcock

Cool but doesn't really show much. I'd probably be more excited over the teaser if it wasn't a sequel, since it basically just re-introduces the characters we know already.
Though I love that shot of Rocket and baby-Groot.