Yes, I agree this would be great.
Meanwhile I could narrow down the problem a bit. It seems that the Image Carousel has a features a strange behaviour compared to the image gallery.
When I use the image gallery with ‘fixed’ size, the images basically use all space that is available in the current collumn. Otherwise, when I use the image carousel with ‘fixed’ size, the images are always really small and there are huge spaced between them. The size is reasonable for a small column , e.g. a 1/4 column, but not approiate for a 1/1 column in my case.