Would be great if it could distribute the objects evenly across a span, with two options: first by only taking into account the centers of the objects, and second, placing them in a line so that the distance between each of their bounding boxes is the same (so a big frame, then a 10cm gap, then a small frame, then another 10cm gap... and so on). Guess it would be another tool. "Arrange" instead of Align, for instance.