Deathstroke: Knights and Dragons is a well done animated movie and good enough substitution for a live action feature that is unlikely to happen. I did like the story, bridging together the character’s interesting backstory.
There is no doubt Tinto Brass is a fascinating character and filmmaker, mostly known for directing Caligula, and these two films, P.O. Box Tinto Brass and IsTintoBrass gives some insights into the man, the second one especially.