Projectional Editing can be done with text sources.

Here’s an old video of JetBrains MPS rendering a table from code https://www.youtube.com/watch?v=XolJx4GfMmg&t=63s

I’m hoping for an IDE able to render dictionaries as tables -- my wishlist doesn’t stop there.

Currently, we have a glimpse of those features, such as code folding, inlay hints, or docstrings rendered as HTML:

https://x.com/efortis/status/1922427544470438381