I can answer this one: no, not at all. Infinite scroll on the topiclist is not something we’re planning to manoeuvre around. There are lots of topics about that subject already to be found on this site.
And afaik, no one has ever implemented anything custom either.
What you could look at is to use the Custom landingspage feature, which would allow you to build a custom landingspage, so your footer could appear on the very first page at least.