Hey @automatio,
Welcome to the community
You could also manually install the nodes outside of n8n into the custom or ~/.n8n/nodes directory for each worker instance. This has been something other queue mode users have been doing for a while and it is also how private nodes were loaded before we added the UI feature, It would of course be great to enable this in the UI and have a process for the workers to also download the node so they can use them.