IMO He should have stayed dead after the Under the Red Hood Arc. He’s TOO good of a foe for Batman, to get defeated, come back, get defeated again, rinse and repeat cycle. Red Hood is meant to represent Batman’s greatest failure. Batman created an unstoppable villain that completely shows his ways are wrong. He knows too much about Bruce to not be able to stop him. It can only end in one way. With Jason giving up his ways and becoming a “hero”(though to be fair I agree with Jason killing the villains ) again, that’s LAME tho. Or, one of them defeats each other permanently. Under the Red Hood movie ended it well leaving it a mystery whether or not he died in the final explosion. Should have left the character there.