Hey. I'll make sure to update the blog to include a shout-out to aws-vault! We were heavy users for the last few years.
We are sometimes wary about contributing stuff like this upstream because it's not always accepted, and then we are in a weird spot maintaining a fork (it happened with the bitly oauth proxy when we added okta support). I'll see what type of work it would take to make it fit in to aws-vault nicely!