If they reboot Batman and cast a new Joker...
Tom Hiddleston would be absolutely PERFECT for the role. Yes Tom Hiddleston, the guy who played Loki.
The guy has everything that would make a modern classic version of the Joker:
The grin? Check
The skinny build? Check
The long face? Check
The classy swag? Check
and most importantly the ACTING ABILITY? CHECK.
WB needs to make this happen
"When you crush an ant beneath your foot, do you feel remorse? No. Is this because you are evil or because you recognize yourself as a higher form of life? This is what the Wizard could not understand. If I have the powers of the gods, then am I not a god myself? Should I not be treated as such?"