Adaptation Displacement: The Three Kingdoms motif has effectively obscured the BB Senshi continuity that the story is set in. It should be noted that the model kit numbers actually start from 300 onwards, indicating the sheer number of BB Senshi SD Gundams before them.
See Fridge Brilliance above; the Southern region of Albion may be established early in BB Senshi continuity, but bear in mind its leader Moukaku, based on the G Gundam - which got renamed for the US as Burning Gundam.
When a Sangokuden rendition of Zhou Yu's understudy Lu Su was announced, the fans did not take too kindly to him being merely Shuuyu Hyakushiki recolored in grey. Then the DeltaPlus was announced...note for context, the DeltaPlus is basically a HyakuShiki in grey with transformation enabled
Retroactive Recognition: Several of the Universal Century archetypes used for Sangokuden characters are seeing new life in the form of the HGUC 1/144 model line. Apart from Mobile Suit Gundam Unicorn mecha, apparently random picks like the G Gundam (Moukaku), Gundam X (Souhi) and even the Asshimar (Ten-I) have been released.