Warning: unmarked spoilers ahead!
Regarding the recently revealed nature of Princess Marie Ange, Regina, Aguri, and Ai's relationship to each other (Namely that Regina, Aguri, and Ai are three parts of Ange), it is my opinion that only Aguri should be referred to as Cure Ace, as she is the only one who actually becomes Cure Ace.
Related to that, it is not proper to say that Makoto or anyone besides the Selfish agents have been serving Regina, any more than it is proper to say the Selfish agents have been serving Aguri this whole time. It's like saying a glove is protecting someone's foot or a helmet is protecting a persons chest. They protect the individual parts as well as the whole, but not any of the other parts individually.
Does this sentence which I removed actually fit The Jailbait Wait?
If Marie-Ange isn't going to back without sacrificing her Literal Split Personalities (which is against Mana's ideal), and Joe can't stand The Jailbait Wait, he might go with Mana after all.
"For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled." - Richard Feynman