You can have a roulette unlocked without having everything in that roulette unlocked. You can have Alliance Raids unlocked having only done the ARR alliance raids, and Raid roulette unlocked having only done a handful of Alexander raids. So honestly, instead of being snappy, I would recommend going through the wiki and looking at the list of dungeons, trials, raids, etc, and comparing them with your DF options, and seeing what's missing. It's literally your only option.