I highly agree with the (!PVER) idea, though I do believe it should just be in (!VER) so that it is easier for people to get all the information at once when reporting bugs on the forum.
After looking at the picture of the windows again it makes me wish I was a tester to be able to use that debugger, it would save me so much time looking for the lines, especially when I change the .js file and forget to click in the text box before scrolling
Anyway, I'm sure we'll have a really good quality product coming our way really soon, but some of these little ideas would be really nice too. If Patchou doesn't do something about listing scripts and their versions then I might try to write a script to do it....