I'd love to see this feature where we could have a directory named "scripts" where one could store scripts that could run on startup or on an event.
It could be used like a config file, instead of JSON, a JS file could enable so much flexibility when configuring you VSCode setup. It could also be used like a tiny extension that requires low effort to make.
I've used similar feature in nVim/Vim for 12+ months and I think it's a really good idea to have such feature. Now that I'm switching back to VSCode, I think it would be nice to see this much flexibility in a code editor this stable.
Let me know what you think, I'm willing to work on this feature if it's something of an interest.