So Deathstroke is definitely dead according to Priest and the idea to off him came from Adam Glass.
https://www.denofgeek.com/us/books/d...n-story-to-end
In the interview Damian came up a few times.
Deathstroke genuinely cares for him and wanted to help him.
Deathstroke built a weird found family around him at various points with Damian, Wally and Tanya
Priest envies Glass wishing he was writing TT so he could write Damian and especially Wally's reaction to Deathstroke's passing.
I wish you were writing TT too Mr Priest.