Well here is my thoughts on all of the minifigures
From DC we have:
Mister Freeze - Stupid, the one DC character's traditional design I liked is changed to this horrid thing
Aquaman - The Aquaman I knew was old has long hair and a harpoon for his left hand
However this is the traditional Aquaman so I respect Lego's decision
Batman in White Suit - A simple recolour, but brilliant. He may be Ice Batman, but I see him as the Arkham City promo Batman
Bane - Awesome, a fantastic surprise
Commissioner Gordon - Awesome
Hooded Robin - Brilliant
Scarecrow - A great update
Joker in Orange Jumpsuit - Always good to have a new type of Joker instead of 6 of the same one
Penguin - Not doing it for me at all
Harley Quinn in Nurse Outfit - Love the black red costume detail underneath her lab coat
WHERE IS GREEN LANTERN?!
And we still haven't heard of the Man of Steel set..
From Marvel we have:
Spider-man - Big eyes makes it a little less appealing to me
Nick Fury - You don't here me say this often, but not enough detail!
Venom - Better than the Comin Con one which looked like Black Suit Spiderman than Venom
Nova - Never heard of him before
Before googling him I thought his mask looked really cool, but after it seems there is too much red..
J. Jonah Jameson - Love that Lego made him
Victor Von Doom - A bit cartoony but awesome nonetheless
Beetle - Never heard of him as well, but looks really good, love the wings
Can't wait for the actual sets