Perhaps this has been requested, but I wonder if a second output could be added to the Domain module that outputs the length of the domain - i.e. "b" input minus "a" input. Of course, it's easy enough to add a subtract component upstream to get the value, but I thought it might be a nice little convenience and make the layout cleaner. Same for the Domain2 components, two outputs, one for U and one for V.
If this is just idiotic, please feel free to ignore me... :-) --Mitch