Axis Snap (Orbit Snap / Alt + drag MMB) should work for all Transform Orientations, not just Global Transforms.

As you know, objects aligned to the world axis can be navigated by snapping in 45 degree increments with Alt + dragMMB. Very convenient.

But what about skewed objects? The number pad works much like Axis Snap, but with poor operability compared to Axis Snap.

Transform Orientation options include Global, Normal, Gimbal, View, Cursor, and Custom as well as Global. How good would it be if Axis Snap worked for each option?

What do you think?