This post prompted me to try VS Code and I must say, I'm really impressed. There are still a few rough edges but I do understand it's still young.
As soon as the Vim extension becomes usable I'll be on board I think; things like visual selection don't appear to work correctly at the moment.
g; and W/E support would be nice (as someone said on this thread, everyone has a different subset of Vim they use ;-) )
Oh. ex-mode is not something I'm planing to implement.
They are often a lot easier to do with Cmd+Shift+P.