I kind of said it in my last answer but rarepairs are not Nothingburger... a Nothingburger is something that postures itself as 'filling' but ultimately is nothing substantial. Rarepairs are usually not nothingburgers unless you somehow expect more than is reasonable from an unpopular pairing. A true 'Nothingburger' ship would be like. Sakuatsu haikyuu lol. I don't think you need creativity to enjoy rarepairs either though sometimes the Fandom is just blind and a rarepair has a ton of Canon Meat to it (see, souma and kanata) that goes completely ignored. Also sometimes the yaoi agenda the writers are pushing is lame lol (see: yztr)