I disagree. Allow me to explain:
Levitt as Strange makes sense if they are going in a
slightly different direction with the character. Let's look at our villains so far. Men in suits, well dressed men, even the homicidal schizophrenic clown with zero empathy wore some pretty snappy duds.
Now, Strange is often shown the same way in the comics. Old guy in a suit.
But this isn't like Joker's purple attire, it doesn't define what Hugo Strange is.
What
does define him?
Bald, beard, Lennon-glasses.
But above all, the fact that he is a wolf in sheeps clothing. He intially appears as someone trying to help the city, as a good man. But beneath it all is a damaged, bitter individual suffering from severe schizophrenic delusions. Batman is the focal point of these delusions, But Strange was
always a real sick puppy, Bats is just someone he's latched onto as a symbol of physical and mental perfection.
His age is irrelevant compared to these facts. Sure, he is often seen as quite old. But I for one would relish the chance to see a younger Hugo Strange. Less a psychologist and more of a New Age-guru. Mind-****ing his enemies whilst outwardly appearing as a serene, enlightened healer.
He'd wear very casual clothes, almost resembling a student backpacker trying to 'find themselves' but it's all a ploy to make himself appear harmless. Basically, Strange would resemble an Ira Einhorn type figure.
Someone smart, possessed of a certain charisma. But unnaturally driven and very, very cruel. Again, a wolf in sheeps clothing. Age is irrelevant. Levitt could revitalise this character.