Suggestion: Option to collect all Footontes on one extra page

What would be real great for, if all footnotes of all pages of a domain-project could be numbered in one general order an could be shown on one single special footnote-site.
To use this properly (and even as well at the moment in bigger sites) it would be very very helpfull if there was a drop down list of all the footnotes that had typed in before, so i could just choose a footnote I put in before and wouldn’t have to put in the very very same text again to make shure that footnote collects it properly to one single footnote. This is quite a problem, when footnotes are longer, as in scientific themes.
If all footnotes of a domain project could be shown on one page this makes even more sense, as I often have to put in one and the same footnote on several sites again and again, although it had been done on another site of the project.

Yeah, might be some more sophisticated.
But that much helpful, that I even would pay for that…

Sorry for my poor english (its late at night, here)

Best regards

Ulrich