Yes, I'm sure about the zooming. I didn't mention stegano because it's obviously more complex.

As I said, partial storage + memory is not ideal, but the main idea is that an attacker would hesitate to try to brute force a seed without being sure of how much money is attached to it. Too lazy to make the calculations, but pretty sure it would cost some money to brute force 3 out of 12 words without knowing the positions.