I think Steph's special gift is perspective. She keeps the other bats grounded in reality and really should be spending more time with the boys. She's also straightforward and very personable--with Nightwing out of the picture, she's the friendliest and most approachable Bat. I really think Robin would've been a much better role for her, since it would give her the training she desperately needs and also keep Dick from drowning in his angst.
I also think that with more training, she'll be a better fighter than Tim.