Could you please add %GUID% (like currently %DAY%, %MONTH%, etc.) to Autotext and Code Templates?
This macro should generate a new GUID and insert it to the code text.
I often create a new interfaces, they looks in code as:
IMyCoolInterface : public IUnknown
This will allow me to speed up this process.
I think this feature will not take a lot of time and will be quite useful.
Also, it will be useful if you planned to add code templates for IDL language.