What I'm hoping for, for all langauges and runtimes, is some global opt-in to WSL. If I have node or python installed on WSL, I would love it if the Windows version of VSCode could act as if it were the Linux version.
Setting up UI under WSL is a bit of a pain, because there's nothing out of the box - so you need to set up X on Windows, or use VNC or RDP. RDP is the easiest by far right now - just install xrdp in WSL, edit the config so that it uses a different port, and connect to localhost from Windows. The result looks like this: