I don't really have anything to add experience wise to this conversation, but this is a topic I'm very interested in (as a future planner/current community bike shop staff member). I'd love to learn more about what's going on in Columbus along these lines!
Co-ops seem like the perfect place to get constructive feedback about best bike routes, since most people using our shop (that aren't kids) are getting bikes for transportation. I hung an empty street map I made at a community bike event we had at the shop, but got minimal feedback. Our current planners are always asking for advice about where we ride (although when I tell them, it's never really acted on, but that's another rant for another day). I'd be interested to learn about other more successful public input from co-ops to bike plans!
Anne Welch
Spokes
Jxn, MS