During a Jane’s Walk earlier this month (some highlights were captured on video here), I walked along a portion of the multi-use trail in the Finch Hydro Corridor.
It was not visibly used by neighbours on a sunny Saturday afternoon, but for what little it costs to build these connections, they ought to blanket the suburbs. A network of trails would be a lot more useful than a single linear path.
It also couldn’t hurt to clear them of snow in the winter.