Let me start by saying Im pretty sure we can assume that the villains will either be The Joker or Two-Face.
I think it would be excellent if either Jack Napier or Harvey Dent had a relationship which would then obviously be dramatically altered when both those characters meet their destiny.
I didnt really think that Rachel Dawes added anything to the first movie and i think it would make the story more interesting if the villain got a love interest instead of creating a love story on the side for bruce to deal with.
I think it would be excellent if either Jack Napier or Harvey Dent had a relationship which would then obviously be dramatically altered when both those characters meet their destiny.
I didnt really think that Rachel Dawes added anything to the first movie and i think it would make the story more interesting if the villain got a love interest instead of creating a love story on the side for bruce to deal with.