No birds, birds are done.

My terrible fanfic idea was to take a character from the Timmverse and make Tim a different legacy: the Gray Ghost. I picture tying the in-universe show to his relationship to his late father, and making the identity a way to remember what he has lost as he moves forward into adulthood. Keep Bruce's love for the show as a boy and you could use it to connect him to both his father and his father-figure. Plus the hat and the goggles give him a silhouette that stands out among the Bat-fam.

Just no more birds.