They could solve the disabled representation thing by bringing back Proxy from the Stephanie Brown Batgirl run - Wendy Harris (based on the character from Superfriends) was a Teen Titan who got crippled when the tower was attacked. She then became Barbara's substitute as Steph's mission control when she was busy with the Birds of Prey. Bring her back, and they basically have a second Oracle who can take over the duties when Babs is out as Batgirl or at her civilian job.