To make inline display of larger data structure results, similar to ProtoREPL, vscode needs support for inline widgets, beyond the CSS decorators Calva uses today. There is an issue with at least some traction, on which I have tried to chip in. I think you can help by giving my comment more thumbs up: https://github.com/microsoft/vscode/issues/3220#issuecomment-430124153

You can also cheer the work on this PR on: https://github.com/microsoft/vscode/pull/66418

I have some time to look at the comment grammar now, @stefan.van.den.oord, how about you?