As far as I'm aware, the only way to access the Audio Export settings (2 bar lead-in, 2 second end, normalize, etc.) is via "Audio | Export Song As Audio File".

Is it possible to add a button in the Options "Options | Preferences" window to the right of the "DAW Plugin" button? There's a space there begging for a button This would be useful.

The image below shows the steps one must follow to set audio output settings.

A good suggestion for providing a more effective way to deliver this functionality.

+1

Would a scripting language work if we could create a custom icon and program its action?

+1 and add the other options while your at it: