My idea would be to start a story set in the Universe of Vanguard, "one year later", where all the previous ongoing plots that affect the main continuity (mainly the occupation of Manhattan and the discrimination laws toward metahumans) have been resolved "off-screen".
I left Vanguard before the last story, so I have not the "rights" to say it will be about the Vanguard team...
I say just to have our respective characters to band together... if there are enough actual Vanguard member, it will be about Vanguard*, if not, we could come up with a different name... I don't think right now it's important...
What it is important is to care about the story and the characters, avoiding to delve into past continuity so not to repeat the mistakes of the past...
*or if the last Vanguard members posters allow us to use the name
