I would like a Page to contain multiple excerpts, so I can reuse content in other parts of the wiki. The current workaround is to have many child pages for each excerpted section needed.

Instead, it would be nice to have one page with multiple excerpts that can be given excerpt names for when you do an excerpt include. An excerpt include would continue to have a mandatory page name, but optional excerpt name. If left blank, it would pull the first excerpt from the target page.