I'd like to balance the footnotes on a spread so that the footnotes on both pages are of the same height--either leaving some space at the bottom of one page to compensate, or shuffling some lines of the footnote from one page to the other, so it can happen. Does anybody know if this is at all possible?
It's not possible using the built-in footnote feature. If you created footnotes manually, you could do it.
There may be a footnote script where you can do this, but I'm unfamiliar with those.