This thread tells one to read
Proposals:Mechanics before writing in this forum, but
Proposals:Mechanics is messy.
1. Everything that is not a proposal should be on a different page or the page should not start with "Proposals:".
2. "Background and Motivation" - should this not be on the author's user page?
3. Links to interviews should be put in an "interesting reading" section or something like this.
I think these steps are necessary, because it's not clear what is important and what is not, what is a requirement and what is not. I guess that the "
Actual Proposals" might be the relevant/important/required pages. Is that correct? If yes, this should be mentioned on the page, that would help much more than the three points I mentioned above.

Help in the sense of making the entry barrier visible, right now I'm not sure where it is.
I would gladly help cleaning up by adding categories to pages (mediawiki's 'tags') or renaming them, something like that, if necessary.