Regarding the Trung sisters/Nakayoshi Saber tags, it's obvious that they're redundant, but I'm kind of puzzled as to why they are being given an umbrella tag when other Servants who come in pairs like Anne Bonny and Mary Read, or Dioscuri (Castor and Pollux) don't have any umbrella tags themselves. The only individual Servants with such a tag is Valkyrie, but that's because they are three characters that appear individually, changing as players level up Valkyrie.
I understand the Nakayoshi Saber tag since it was a placeholder, but we really don't need it anymore, like what happened with Kirakira Archer before she was revealed as Sei Shounagon. The question is if we want to keep a trung_sisters_(fate) umbrella tag for these two.
At the moment, the only thing I've done are switch over the individual character tags from no qualifier to adding the *_(fate) qualifier.