Needs to be hidden to avoid exploits.
Been playing around more with various things the client receives, looks like the local chunk cache on the client stores chunks in smd2/JBTF format, allowing a player to reconstruct entities they've seen from servers they've played recently.
Basic method is: pop into StarMade\client-database\DATA
Chunks belonging to the same entity have the same hash, if it is a multi-chunk entity the chunks will have their offset in the filename.
Copy the file(s) into the data folder of a blueprint.
Spawn as admin locally.
Good news is logic links don't appear to be cached.