Originally Posted by
Aahz
That simply doesn't work for Green Arrow (or basically any other DC Character outside of Batman and maybe Superman), Green Arrow has at best a single book (and doesn't really have big events, digital first or anthology series), you can't put that many support characters on the book before you start taking away from the lead character.
In team books you are also kind of limited in the amount of characters you can have, if you want to give every character a decent amount of screen time, and the usually try to give all characters different power sets and characters from different franchises (you will hardly ever see a team book that has a Robin and a Batgirl in the main cast, unless that book is part of the Batman franchise). You could of course put Emiko and Lian on different book, but DC doesn't really has much books with teenage superhero teams (at the moment only Titan Academy iirc) and Emiko and Lian seem to be about the same age which makes it even harder to find different teams for them.
Btw. turning Lian into a Cheshire/Catwoman style character and not in an Archer might make it actually easier to but her on a team with Emiko, since they are not competing for the "Archer slot".