Nolan on Two-Face and No Third Movie?

Wizard inteviews Chris Nolan on having Two-Face in this movie and him not returning for a third.

WIZARD: Obviously, fans can’t wait to see the Joker onscreen, but why add
Two-Face as a major villain in “Dark Knight”? Are you worried it may take the
edge off Joker a bit?

NOLAN: Certainly there’s always a danger in a
sequel by introducing more characters. You can wind up with a very large story.
But at a certain point, you start to think that that’s partly the purpose of a
sequel—to expand the story that you started telling and carry it on. It expands,
too, for all of the characters. You’re doing it in all different directions, and
so I think you quite naturally end up with quite a larger story. It’s going to
be a tricky balance keeping everything in proportion, but the challenge is what
it’s all about.

On one side I don’t mind having Two-Face as long they can flesh out Harvey Dent before that and on the other side that they should hold off Two-Face til the end setting up for a third.

Speaking of “finishing,” is this film the last for you on the Batman franchise?
It’s been a big part of your life for the last half decade.

NOLAN:
[Laughs] That’s right! It’s really tough for me to ever talk about future
projects. Films particularly of this scale are such mammoth propositions. I
never thought that I would do a second “Batman” film. Let me put it that way. I
had no thought of doing a second one when I was doing the first one, but
obviously you never say, “Never.” Every film I’m working on, however, to me is
generally the last film I’m ever going to make. That’s my approach to making
film. It’s one of the reasons actually that I’m not comfortable putting footage
out or early trailers because I’m engaged in making one thing at a time. I’m
very single-minded and very focused on the task at hand and I do focus on just
this movie. I really don’t have anything in my head about what’s next or doing
another one or whatever.

I think this is a good move, he should take a break from the franchise so we don’t end up with another Spidey 3 fiasco.