This tool is a life savior. It's extremely cool, so thank you!
I have some suggestions though:
The tool fails to add ACEs when the ACEs functions in editor.js aren't all ending with a ";".
I know it's better to have them, but when I copy some code, especially from the default sdk provided, I sometimes forget to add these.
The tool stops when it encounters an "AddFunctionNameParam" or an "AddAnimationParam" which are hidden param features that are no longer available in C3. So I'd recommend to change them with an "AddStringParam" as it doesn't change anything (else than the C2 specific editor features).
It would be cool if these got fixed, even though they're pretty easily fixed by hand before the conversion.