The AMA subreddit mod team gave up on support and recruiting people to give AMAs. /r/pics and /r/videos are gone, almost certainly not coming back. Many companies, like mojang, that used reddit as a semi-official forum have left. Numerous small and medium subreddits have migrated over here. Not API related, but april fools this year was literally just a potato. Other than maybe /r/askreddit, there’s not much there anymore that I can think of that still makes it unique.