I'm not sure if I understood your issue correct.
What you describe is the intention of blocks. Blocks are created and stored in a table inside the drawing.
When a block is inserted, only a reference to the table is inserted in the drawing.
But it is possible to change rotation and scale of the block with each insertion.
So when you change a block in the block editor, all other insertions of the block will be changed too.
When you want to modify a block for different insertions, I recommend to explode the block in a free area of the drawing and then create a new block with different name to modify.
Find more details about block operations in our manual:
https://librecad.readthedocs.io/en/latest/guides/blocks.htmlArmin
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