Post Secret War, we don't know which Panther we're getting. Since there are so many different realities being merged on Battleworld, whose to say that the Panther that will be present going forward will be the deconstructed Panther we've been getting?
Since they are picking different eras as well for Battle World, The Panther we get may be pre Doomwar Panther, maybe even pre-Reggie Panther. Hell, for all we know, we could get Happy-Pants Panther back. All of these stories go back to the Age of Ultron and Wolverine breaking time. Marvel more than likely is going to take this opportunity to pick and choose the "Iconic" versions of characters to use from a certain point in their time and popularity.
Example, you didn't like the"Brand New Day" era of Spider-Man? No problem! From here on out, The Spidy we're using is plucked from the Civil War.
That said, Marvel could have given Hickman to do 'what thou will'. We may not like it, but if that is what Hickan is doing, so be it. Panther and Namor may both die after this event. It wouldn't surprise me at this point. If they do, then perhaps the Panther and cast chosen would be from an era in Panther history where it is still strong.
We can count out a married Panther/Storm union, so if the Time displaced Panther we get is from before the Marriage, I think we'd be in a place where the Panther status quo would be acceptable. All of the awesome and none of the deconstruction.