It would be great to see a view of where the observatories are in space especially for those not on the earth-sun line. e.g. show a top down solar system view of spacecraft.
Current PFSS field likes in JHelioviewer are precomputed, it was requested to be able to choose parameters for points that are traced.
Footpoint identification was requested. This is a work in progress in collaboration with the WSA Dashboard team: https://ccmc.gsfc.nasa.gov/community-tools/WSA-Dashboard/