Well, it all depends what purpose CPI serves. It could serve as expection to rule in Loom of Fate. But also note; You got a DB who has Destiny 5, it means my char destiny is egual affecting/big as Scarlet Empress had. So perhaps first solar city could indeed be led multiple exalt types and include allowance of CPI which happens to mimic what Exalts did in first age. Even then CPI is not extreme as some first age solar led cities were.