Like in real life, ingame blueprints should allow for some types of changes.  hose changes are permanent on the BP until being changed again. Possible with DRM-protected BPs and own BPs. EXCHANGES (selct from a list of compatible materials) - each type of honeycomb can be exchanged with another one (example: Matte Black Plastic to be replaced with Matte Yellow Plastic) - each type of engine can be exchanged with another one of equal dimensions (example: Basic Space Engine S to be replace