I would like to suggest a change in the resizing behaviour of the page footer.
I understand that the footer height is fixed by design. My guess is that this is to avoid problems with filling the report, since you can't know when to switch pages if the footer size is not determined upfront.
However, I guess this is not a problem as long as the footer size can be determined before the page filling starts.
In the use case that triggered this request, this would be possible: my users are organizers of sports meetings. Some of them want to have the possibility to put the logo's of their sponsors in the footer of the reports. The logo size can vary and if there are no logo's the footer should be smaller.
Since the logo image(s) can be passed as parameter to the report and they are not changed during the rendering of the report, the footer size can be determined once at the beginning.