A request has been made to have a JOSM plugin developed for Panoramax. Looking at the following sites, I have the impression that we could be waiting a very long time before a JOSM plugin for Panoramax comes along. Since the Plugin for Panoramax is neither scheduled in the short nor long term and Panoramax is not the enegi to request a plugin. See the following sites: JOSM prio list
In addition, it is possible to develop your own plugin for JOSM see OSM forum JOSM plugin development. The OSM mappers who really import a lot of data into OSM use from largely exclusively JOSM. Would it be possible to add an item to the list for discussion at the online meeting namely. Create Panoramax plugin for JOSM on our own or wait for developpers of JOSM (which could take a very long time)