The spring is mapped fine. Add the start of the stream and a missing path
Add missing track, track geometry, one part of a track that randomly has gravel and is much nicer
Add missing path, bench, clothes recycling, soccer pitch, one path that is a track
Add lit=yes on a bunch more path on Kaiserberg and in Duissern
Map the lit path up the Kaiserberg
Add a substation, a parking ticket machine
Specify whether pedestrian crossings have islands
Specify bicycle parking capacities
Survey hairdresser's customers
Add whether public transport stops are lit