But did the joker even die???

I think they should bring the joker and talia al ghul back to life by another one of ra's al ghul pits

Is the dee dee twins,red hood, nightwing, catwoman, man bat,scarecrow,killer cro,poison ivy, robin, joker`s kids,joker,mr.freezes,nora,zsasz,and other people going to be in there????