Wikipedians have proven to be quite adept at creating scripts, software, bots etc to automate all kinds of things.
We are now in a situation where anything added - a new article of information added to an existing article - immediately gets challenged if it has no sources, and often the sources get challenged.
That's fair enough, it goes to the credibility of the project and the information we make available.
However, at the same time, that are millions of older articles that 'got away' without or with few sources when they were created. Some have since been tagged as being "without sources".
SUGGESTION:
Can't someone create something that will identify ACTIVE editors who at one point contributed significantly to each of those unsourced articles and alert them to see if they would show interest in going back and adding a few sources? I am working from the premise that someone who constribute more than a casual correction of a typo etc has some affinity with the subject and would be the most indicated person to quickly find valid sources.
I included "(tagged)" in the subject line. This, because with my 'limited' knowledge, I presume that it would be easier for such would-be mechanism to pick out articles tagged as having no sources. At the same time, I recognise that it would not be impossible for the software or whatever to scan the whole article looking for surces and if none, add it a basket of unsourced articles.
Also, I remember reading about a bot created by the Ducth WP that has created about half of the articles in the Swedish WP. It apparently has - among aother things - the ability to find valid sources.
Best regards,
Rui