Is there no push for more responsive controls?
It’s a major missing element for me, the inability to look at a preview and scale up and down and set the font sizes, padding, margins etc. of blocks and families of blocks.

There are other big things missing but that’s one which still keeps me away from Gutenberg as any kind of page layout tool. I don’t really want to be tinkering in a JSON file just to set a margin on a bunch of blocks when the page is narrower than 800px for example.

Which is a whole other topic. the Theme.json problem.

There was a suggestion that Gutenberg was going to make layouts easier, with less scripting, but anyone who has tried to wrangle a huge nested JSON file knows it’s now a lot more painful than it used to be!!