Knowledgebase: Find old articles for revision

In order to keep articles in the knowledge base up to date, we need a date in the KB article, after which we can sort in the KB list. The aim is to find long non updated items to bring them up to date.

But to save not only the correction of a typo as a complete overhaul, you have to influence when saving whether the article has been extensive or just a trifle changed. For example, in Wikipedia you can also specify when saving in articles whether it was a "small change" or not. This could then influence whether the date of the last revision is set to today or remains as it is.

what do you think of this idea?