Though it is a good thing the model-setup tab shows the standard values next to the active values, I'd like to suggest a function that enables you to quickly revert to the standard settings. This could be done through a double-click on the slider (as seen on Lightroom, for instance) or a right-click (as seen on 3ds MAX), but I like opening and closing the menu on a right-click, so I would go with the double-click way.
I think tweaking some settings would be more comfortable having this functionality. This way you could crank and yank a setting to the extremes, to see a more prominent effect of a particular setting and quickly go back to normal if it doesn't do the trick.