X-Ray?

Would it be possible to design an xray that would temporarily make all items transparent except for operators?

I'm guessing battleye wouldn't flag this because it's not drawing anything at character entities, but I know nothing about battleye, so I could be completely wrong.

If this was possible, what would be the way of doing it?

BattlEye would detect it, if its an external program that attaches to R6 than yes BE will detect it.