Thanks @Tomas_J, all good questions!

For unpaved footpaths I rely on being consistent with tags for paths that are next to roads. So I choose to use footway=sidewalk regardless of the surface material: osm.wiki/Sidewalks

Regarding kerb ramps, there have been some of these added. I don’t believe that this creates an issue with routing or mapping and would just add extra information.

Finally, I’ve never used the footway=link tag, sorry. Hope that all helps!

Thanks for that help guys :)

I guess my concern with using the VicRoads or PTV data is that many tram stops have shelter from adjacent buildings that are not necessarily dedicated to shelter for the stop, and is not included in the open data. Some of the seating that is not owned by a state government authority is also not included. The data would be useful for the accessibility aspect though.