When I startup Zwift I can set the start point to where other riders are. Would it be possible to define set segments for each track and have these segments as choices on the existing pull down list. These could then be mapped through the various online maps. (Direction of travel may also need to be defined)
For instance for the london track start segments could be
Box hill (top)
This way each user can choose where they wish to start on each course. Over sequential days users can cycle across segments and start at the next start point.
Hope this makes sense.