I didn't find anything insulting about how Babs was used in Stephanie's Batgirl run because she was written in-character and she was treated as having the kind of authority, history, and experience that would require Steph respecting her and taking her advice. She has a link to the identity and mentored the last Batgirl so of course she would be majorly involved with the next Batgirl. I don't see having a supporting role as a bad thing if it's a supporting role with weight to it and she's not OOC.
If she's Oracle in Future State I imagine she'll probably get mentioned in all the stories, especially if the Batfamily are spread out and trying to function in a dictatorship out to hunt them down.