WHERE'S THE DISLIKE BUTTON?
Debatable. She seems to survive worse than falling down a pit of fire. Seeing how a powerful swing from a Z-6 riot control baton (sorry) did little more than poke a whole through her armor (didn't even touch her eye), I think we could see here back with a burned face and scarred ego in the future. I mean, there was a deleted scene where she came back anyways.
I don't know how JJ said this, but it sounds to me more along the lines of "Don't expect Ahsoka, Ezra, Holdo, Tallie, Ackbar (sniffle)...," but seeing as how Lando is in it, that won't be true.
And would Phasma technically be returning if she wasn't dead in the first place...?
And DJ not returning would be worse than nearly any move made in TLJ, excluding the fate of everyone's favorite Mon Calamari admiral (unless you liked Raddus).