Re: "and are seriously considering other options"
Wiki that won’t export pages.
Can’t get a notification when a wiki page changes.
Eh? I don't use Confluence a lot, but I've written a few dozen pages in it over the past couple of years. When I've needed to export pages, the Export to PDF and Export to Word (ugh) have worked for me. And I have no problems getting notifications.
I prefer MediaWiki, because I don't care for hand-holding "rich" editors that mostly just get in my damn way. But I'd rather use Confluence than some of the alternatives, such as the festering abomination that is Sharepoint.