Currently, image queues require specific placements for each position in the queue. It would be great if you could specify a dynamic queue where each subsequent image is placed immediately after the number of pixels of the previous one, with an option to specify a buffer in number of pixels between. This way, a variably sized grouping of images could a) have consistent gaps between them, b) allow for images with variable widths, and c) allow the whole group to be dynamically centre-aligned as a whole overlay.