Job: Gut out/Simplify/Fool-proof Advanced Dupe 2

I would like to have the tool Advanced Duplicator 2 gutted out and made more simplistic. The default tool includes features such as copying constraints, editing offsets, experimental settings - which to me are entirely unnecessary.

Essentially I would like the tool gutted out to simply allow for the copying of entities and constraints, and the pasting of constraints ONLY, either at an off-set determined by the player's position, or in the original position from which it was copied. In doing so I'm hoping to clear up some issues caused by the tool such as accidental crashes and keeping it extremely secure/future proof.

Thank you!