Feature Request - set default duration of image

I use Rush to import a lot of images quickly to make a slideshow using the very handy pan and zoom feature. It would be a lot easier to get to a fairly usable edit out of the gate if I could set the duration without touching every single image. I think it defaults to 2.14 seconds which is fairly short. I'd love a setting to change the default. Most of the time I'm using 4-6 seconds depending on how much I'll pan/zoom.

Another way to go about it would be the be able to change the duration with multiple clips/images selected, but the most helpful way would be to be able to set a default.