3ds Max :: Making Angle Of Gizmo Appear When Rotating Plane With (e)?

1. How do I make the angle of the Gizmo appear when I'm rotating the gizmo plane with 'e'?

2. Also, how do I rotate the gizmo itself, so that i can rotate it in any ambiguous axis as well if I wanted to.

For example, let's say I'm slicing a hollowed box usnig Shell modifier. I want to cut the box diagonally. I make the slicing plane vertical using x rotatin axis (red) at perfect 90 degrees (this is why I want to see the angle displacement when rotating a gizmo), then becaue I want to cut it vertically, I rotate the plane on z rotation axis (blue) 45 degrees. Now, I want this cut to be slanted. That means I have to change BOTH x and y axis with equal amount to achieve symmetrical cut I want. ("5 snaps of rotating the slicing plane on x axis and y axis" something like this)

What I want is change the orientation of the gizmo itself so that x or y rotation axis becomes the angle I want the box cut to be slanted at.

3. I've been using 3ds max for rendering most of the time, and didn't really have time to ask myself, why is it such a pain in the a** to get the correct effect I want from max? Viewport and renderd product doesn't match at all for me. Rendering should be just a way of making the viewport image much prettier, not turning garbage into an artwork. Because of the difference between the viewport and renderd image, I constantly have to do test render at 320x240 to see how it looks.

When I say the two doesn't match, it includes but not limited to:

-Lighting Both daylighting system and artificial lights(photometric/standard)
-Intensity
-Shadow casting accuracy
-Material

Scale mismatch of rendering and viewport.

-Color
-I'm guessing it may be because of the lighting that the colors are very off.
-Unexpected glow on my model from other surrounding objects.

Sketchup or Rhino shows vaguely how it's going to look when it's rendered, just poor quality. Why is it so not intuitive in max?

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