Cool. Do you provide the (NSIS) sources somewhere, too?!
Just commited 
While adapting the script, I made very few changes:
*Updated the NSIS plugin Modern UI to mui2.nsh (more flexible).
*Added a question in the end of the uninstallation, asking the user if he wishes to delete the application data.
*Added Abbreviations plugin, it seemed to be missing from the release installer.
*Updated installed files and available plugins to match nightly builds. Notably, wxscintilla is now compiled statically and wxpropgrid is an sdk dependency.
*Added the extra plugins: cbDiff, ColorCoder, FileManager, PowerShell, SpellChecker, XPMEditor.
Hope you find this useful.