I would like to have a "Full-HD"-Setting preset in the Create-Photo dialog.

What do you mean by "Full-HD"? An additional quality level?

Also, it would be nice, if the 3d-view window could be "set" or "force" to use the settings used in the mentioned dialog.

I see what you mean but I'm not sure it's worth an additional button. Any other idea: I could append to the 3D view label of the Apply proportions combo box an information about the current proportion (4/3, 16/9...).