The other side to this is we need to have that "box" not always tied to 0°, 45°, 90°, etc. There are multiple times where items are skewed i.e. dumpster pads, parking stalls, etc.

What about also adding the ability to have another viewport (multiple would be ideal) on the same sheet, that has different scales than the overall sheet? This comes into play with "enlarged" plan ...

It also works as the "stop" key, and that would be nice to have.