I downloaded the latest version and the option not to resize works great.
Dare I suggest another (minor) tweak? Most times I think I would choose '3 Combine images, putting one next to the other' most times, so make this the default button for me.
Edit: Another option to maybe not show the 'WARNING: You have objects that may not resize properly' after the first time it is shown.
As always keep up the good work.