JADE Environment Development Ideas

A nice feature of Visual Studio is that, when debugging, you can step through code, then drag the execution position back to re-run the code you just stepped through. This is a fantastic feature and if Jade could support it that would be fantastic.
(Of course, granted any side-effects from previous code execution won't be undone, but sometimes it's nice to be able to "replay" some code to see why it did what it did.)