My comments are more on the practical side of this design:
Is there a need for such a network? Are the people in this community lacking areas for recreational activity?
Will this bike/running path connect to any commercial/industrial districts or to schools? If so, will business owners and schools provide bicycle parking?
Will business owners have concerns that the proposed street plantings will shield their store front?
Will this bike/running path and street plantings affect site distances for people leaving their driveways?
In this area, is the trash pick-up curb side? If so, will this proposed design affect the trash pick up operations?
Who is going to maintain the bike-running surface and the plant material?
How are you going to address storm water runoff for the increase in impervious surface?
What is the construction budget?
What is the construction budget?