Needs some work... there are items of the UI that need some sort of user feedback. eg. I click Download Interface Tester and wait... and wait... then realise it was downloaded on the sly and then not opened after downloading and it didn't tell me it had finished downloading or anything. The same goes for the "Pack Script" button, I click it, my hard disk makes a noise and I have no idea where it's packed it to. I had to check the code to see where it was packing it to. Maybe open the folder and highlight the file after a script is packed? Or at least something to tell me the button did something.
Other than that, it's OK, could be useful for speeding things up sometimes.
EDIT: Oh, and make the packer not zip up Thums.db files, really helps keep plsc sizes down.