Our script now has been released in our wiki page, with some instructions and screenshots by Rueen.
In the other hand, we are trying to get more help on the bug on how to add make more regular expressions substitutions to a tree rather than just one change.
My personal feeling of this project is that I still don't see how this script would be used in the end but maybe someone will end up stepping in and bring some insightful ideas.
Another issue is that it should not be called TOOL, it is a scrip that would be run where an l10n source tree is and once run it would generate another l10n source tree with the changes made.
I hope this script could go really far, since it could be really useful once people would understand it.