Batman: The Animated Series kicked off a beloved universe of DC cartoons back in the 1990s, and those series eventually spun off into Justice League and Justice League Unlimited.
Providing fewer details, oxymoronically, leads to more complex characters in certain situations, and The CW could easily accomplish the same thing with Green Arrow.
Realize it or not, there’s already a model for success in the animated DC realm that shows exactly how to do this.
He was still clearly Batman, but his depiction changed ever so slightly to accommodate a change in environment and social circle — which ultimately kept the character fresh for audiences.