A high percentage of petitions end up being closed as “Plugin territory”.
WordPress has evolved for almost 20 years. In such a long time, the Core probably already includes everything it needs. Most petitions that look like “add whatever to Core” are very probably Plugin Territory. Of course, not all of them.
The real petitions directed towards changes in Core will look more like “Change whatever in Core” or “Remove whatever in Core”.
Where can we add such a note and with what words, to reduce the amount of “Plugin territory” petitions?
My suggestion is:
“At ClassicPress our main goal is to keep a stable, secure and lean Core. If your petition is about adding something to Core, please add to your petition a reason for why this should be in Core and not a Plugin. Note that almost any new feature or extension for a Core feature can and should be handled via Plugins. Please don’t start a petition if that is the case”.