User blog comment:Cristina7/Introducing Discussions, a New Platform For Engaging Your Community/@comment-180408-20160927122538

My community recently left an external forum and started using the Forums extension instead, because:
 * we were interested in using wikitext since it helps new users get used with it and it allows plenty of different uses;
 * we wanted anyone to take part of discussions before joining in as users;
 * we liked it being an integral part of the wiki instead of something detached from it.

Discussions will wipe out all the above. We're talking about going back to the old forums because a new one without the features we wanted is literally pointless for us, and I don't see how that could benefit Wikia. Please consider making it opt-out, at least.