Before anything, this is just a theory, but when we look at the evidence it makes sense.
So, a while ago, when asked by a fan on twitter if he knew when would Harper Row be seen again in the comics, he said right way: "Detective Comics issue 943"...since then, many people have been wondering if this wasn't all planned way back since before issue 934...If Tynion already knew that he was going to have Tim being taken out of the equation early on, by Oz, and thought about Harper Row for a temporary replacement...Well, i gotta say, judging only by that alone, it seems so. But then again, last month Tynion spoke about the future of Detective Comics in a interview, and twoards the end of the interview, he said that he choosed to use all of this awesome characters, for many reasons, including what each of them brings to the team, and the fact that they weren't being used anywhere else at the time, but Editorial didn't let him use all of them right away, so when asked about the future of book and about what other characters did Tynion thought about using on Detective but couldn't right away, he said: "Batwing"...now, my question is, why didn't he even mentioned Harper Row? if she's indeed meant to temporarily replace Tim as some people have been guessing, shouldn't Tyinion at least have mentioned her along-side Batwing? The way i see it, Tynion is bringging Batwing to the book to stay in for a while (as Tim's temporary replacement, most likely) hence why the reason to mention him and only him, so i'd say that while Harper will indeed appear on issue 943 and maybe make some ocasional appearences from time to time, she's won't be a regular like the others, that place is reserved to Batwing in my opinion.
Here's the interview: http://capedcrusades.com/2016/08/24/...man-vs-batmen/
What do you guys think, and who do you want to see the most?