Hey Michael,
I just tried it and I like it. It's good for analyzing what I've got and am looking at.

First notice is that with a decimal value of 5 places as the UI setting, the label display's the 5 places but the edit popup still truncates it down to 4 so the numbers dont jive. I believe you would already know this and that just has to be tweaked in if you decide to implement it into the workflow.

Again, I think you hit it with "When I'm working on a building at 536.82, I'm less worried about .0002 than when I'm fitting parts in a precision component where the value could become apparent. Even I dont want to be bothered with the larger value decimals on larger models. I still think a switch in the options or something is better than hard coding it into all operations.

I'll leave it for you to contemplate.

Burr