I think the next step is trained, volunteer, mostly armed observers on the streets late at night.
My mind tells me yes but, remembering the recent incident where the “volunteer” shot and killed a man “accidentally” my heart tells me proceed with extreme caution on arming non professional people. This incident was video taped and the guy killed was a non felon, as I recall.
I think, on such volunteer neighborhood watches, personnel that were armed would have to be licensed cops either off duty or retired.
You could possibly have 2 man/woman patrols with one armed and one not, or SOMETHING like that.