Thanks a lot ! Yeah the scaling bit was a tad hard because of all the rotation changing all the axes.
Every Collision was really hard because i needed to not have rigid bodies over my cubes to be able to scale them correctly and not push other blocks out of the world lol. I could just reverted to their position before it entered inside a block but it just blocked it without being able to move it anymore. It was a real challenge i overcame, but with the price of juice, visual and the rest of my game idea