Sometimes I wish VS Code had something like Code Bubbles, where it becomes much easier to see how pieces of code are related. I think it would make AI assisted coding much easier as well, since often the main challenge is having to piece together how changes across multiple files work. There has to be a lot of potential for better interfaces aside from a chat sidebar.

https://cs.brown.edu/~spr/codebubbles/

Technically Doxygen provides something similar from generated code

https://www.doxygen.nl/#diagrams