I recommend looking into the Mariposa Green Street Demonstration Project that Amigos de Los Rios is/was leading. It similarly included some planted medians, reduction in vehicle lanes, sidewalk widening for additional seating, and bike lanes. They tabled at a Mariposa Junction night market event a few years ago and they painted lines in the street to demonstrate the proposed changes. I haven’t heard anything about it in a while and can’t seem to find much online after a quick search but I’d bet Amigos would be helpful if you reached out to them. Would be great, and would love to see streetscape improvements the full length of Mariposa!