@Agaricus I took a look at the project archive. it appears to be hosted on a WordPress site. I’m not a WP expert but I do WP development and hosting… and I might have some “facts” about your websites’ infrastructure wrong but here’s my initial take…
Your #1 is tricky because the “standard” way of allowing authors to edit is to create accounts for each project author and tag them as “author” of their project pages which allows you to give them editing privileges of their pages but not other authors’ pages. But you probably don’t want to have ~400 accounts on your WP site (It looks like the forum runs on Discourse but the QS site is WP, so I’m guessing forum accounts aren’t replicated on the main QS site.) And it would be a bunch of work to implement. And you’d need to communicate the login credentials, etc., etc. Alternately, you could offer any author who WANTS to make edits to their project pages the ability to create an account but even that is an ad-hoc solution. What might be more manageable is to programmatically assign every project a unique code that only the devs of the site know and if an author wanted to edit their project pages, you could give them the code. The idea is anyone with the code for a specific project page can edit that page without having to have an account on the site. But, I don’t know of an existing WP plugin to do that. So that option still has a development aspect to it. Sadly, it might be more realistic to create a streamlined workflow for allowing authors to submit edits.
Your #2 is easy in theory - we just create a form where people submit info about their project. The form could have the same structure as the existing show and tell filemaker database structure. Then add a basic workflow for submissions to be reviewed by an editor and “approved/published”. They could be tagged as “external” to distinguish them from the full-on projects/talks hosted on the QS site. But there’s still dev. to be done to make that happen.
To your question of, “Does any of this sound worthwhile?” - I think that’s tough for any one outsider to answer for your #1. If I were consulting, I’d probably ask, do you regularly get people asking for improvements to the content in your show and tell pages? My gut tells me you’re already delivering tremendous value in publishing these projects/talks. Trying to improve them is going to pit you against the 80/20 rule. Lots of time, effort or $ to make marginal improvements across the board.
Your #2 however - I see a fair number of people in the forum asking for opinions and resources on a variety of topics. And I often read your responses that point to various existing resources on QS or elsewhere. ( I know that must take a bunch of your time and I commend you for putting in the time and effort to be so responsive!) So yes, I think your #2 project would be well worthwhile if it resulted in the ability to easily point people to specific “pages” that meet their needs. For example, if someone wanted QS resources/info for sleep apnea, it would be great/useful to reply with a link to a page on QS.com that included QS talks about that topic AND external QS-relevant resources that other people had submitted.
My apologies for the long-winded reply. This is an area that interests me and I’m not sure of how best to improve things for people who want to be proactive at improving things for themselves (and others).