The "feature" I'd like to see most is a "perfect setup" guide (or maybe auto-detecting-and-helping logic?) detailing what's required to get all the features working. Currently for example I don't get HTML/CSS formatting, even though it was featured in 0.6.0 changelog, but I have no idea why :-/ . Got this feeling a few times with vetur as well as other linters: things work, but maybe not 100%, and it can be opaque to dig deeper: is it due to vscode misconfiguration? vetur misconfiguration? missing tooling? I don't know.
EDIT: these TS-dependent auto-completions look fantastic. I'm planning to migrate my current Vue project to TS, but for now it's just JS. Do you have any recommendation for Vue2-with-TypeScript documentation? Or, even better, a JS-to-TS Vue2 migration guide?