Brick co-ordinates change when I change the model viewing angle.

[SNIPE]

I use that because it helps sometimes,

Let's say your movel was diagonally placed , it is awkward to move it using the spin tool, I find it hard to put that diagonal placed model back flat (horizonally) as it just keeps tilting the other ways and not how i need.

Even with the right click menu's set viewpoints it is still not flat.