Hello, I have a suggestion. It would be possible to add a button or tab that would display a 3D image of the saved blueprint without having to place it on the island surface.

Probably quite complex, but I can look into it.

what would you use it for?

What would I use it for?
I have created a large number of blueprints, I don't remember exactly what they look like, how they are oriented.
Some blueprints are parts of a larger whole, which is built according to the level of research.
And one also gets a spatial idea of ​​the size and area and complexity of the blueprint.
In case some buildings are not yet researched, or some mod is missing, I can see if the plan is usable.
If it could be implemented, I think it would be a very useful tool for creating large-scale blueprints.
That's probably all for your question.

PS: And I was wondering if it's possible to create a list of mods used in a given blueprint that add objects to the game (buildings, warehouses, repair shops...).