It would be so great with an inspection tool for tolerances. So its easy to find out where the tolerances are to tight.
It would be a kind of fusion between "interference" tool and filter option for stresses and so on found in the simulation workspace.
Suggestion/explained : if its made in the same way as you set threshold when looking at stresses in simulation workspace.
When a slider sets the threshold, the faces/bodies/components that have a lower tolerance between them, will be colored for example red. The same way simulation workspace works.
This way it will be easy to find out where you should change tolerances before sending to production! That could mean just a 3d printer 🙂