Heath ledger / the joker / third batman movie?

first off he didnt die. but i think they should keep goin wit the joker. even tho no one is better then heath ledger. but i think it would be kool for a third one to come out and have the joker in it...just wouldnt be as good as the dark knight. nuthin is. and also two face was in the dark knight so the ycant use him in the next one. but i think mr. freeze would be pretty kool.and they shouldnt kill the joker in the third one...the whole point to him was like he said in the movie..."This is what happens when an unstoppable force(joker) meets an immovable object. you wont kill me out of some misplaced sense of self righteousness and i wont kill you ,well ,because your just too much fun. i think we are destined to do this forever."