Allow me to start this discussion off by saying that though the requirements of this site are a bit relaxed, there are still some rules that posters need to follow. New users tend to post low-quality questions and answers on this site, often because they don't know the site rules outlined at How to ask and answer software recommendation questions - aka 'The Ground Rules'.
On all Stack Exchange sites, there used to be the pages
/questions/how-to-answer that would outline the site's requirements to new users just about to post on the website, but they were only used on Stack Overflow. Basically, when a new user attempted to post, he/she would be directed to these pages and would have to "agree" to follow the site rules before reaching the form.
I was previously going to write a request to require new users to see these pages (and tailor them to our needs) that were on this site before they could post, but unfortunately, because I have delayed for far too long, the SE team got rid of them and redirected the old links to Help Center articles. Now, there is no page that can be shown before a user attempts to post, and thus possibly more low-quality posts than if we had them and they were being used.
On SE sites other than Stack Overflow, the pages existed, but were never linked from anywhere.
My proposal is to both reinstate those pages and require new (< 10 rep) and unregistered users to see those pages and "agree" to the site rules before attempting to post, like Stack Overflow has done in the past.