Yea this list is perfect. Maybe adding support for ipynb files (jupyter notebooks in vscode) would also be nice cause there are many students who use vscode for jupyter (like me). Also, I think Ruby would be a big one for some people!
BTW, I am a big One dark pro theme fan on vscode, and the author recently allowed you to change the color of any syntax highlighting he has added. Like you can change variable color and all in the settings menu easily:
If you could add this for customization it would be nice too! Sorry for asking you to implement soo many things.
One last request - the weirdest of them all - I know this theme looks amazing cause of its brown colors and chocolate like schemes - but maybe can you try making a very dark blue theme too for both Obsidian and VSCode? Like basically One Dark Pro but way more darker. This is a bigger task cause you would have to completely overhaul your theme that you have right now but I have really wanted to ask a developer to do this as whenever I try making my own theme it fails utterly.
P.S. I have mentioned one dark pro a lot in this message and so I would recommend you see how the author of that theme made the theme cause it was a hit and is the most installed theme on VSCode (I think).