include macro - add drop-down menu in the page and document field with existing pages/documents as values

It could be nice to add this suggestion in the GUI of include macro :

add drop-down menu in the page and document field with existing pages/documents as values of this drop-down menu.

Now we have to check for example in the include macro documentation (https://extensions.xwiki.org/xwiki/bin/view/Extension/Include%20Macro) to know how to specify the page or document, and only in Xwiki source format. And so the GUI for this macro is not so useful.