I want a serious TOne. TO me the Avengers was cheesy and for Kids. I can name Tons of things about the movie I didnt like. For example Where was the Army at the End of the Movie during the alien invasion. Also How did hulk show up on his nike but the army didnt. How couldnt thor break through the glass but when it was fallin he did. THe movie was OVERRATED!!!!

They probably will make it in a serious tone, I remember reading some article, WB saying that they want a different approach for the Justice League having a serious tone to it..and if Man of Steel is the first of JLA then it definitely will be serious. JLA needs to be mature and serious, that's what makes it different compared to avengers or marval characters.
And, there's also a rumor that Man of Steel will introduce Wonder Woman, or at least hint her existence at the end of the movie

That and I hope they don't keep it too grounded. I was disappointed that Superman Man of Steel was starting from the beginning AGAIN, and facing Superman against Kryptonians AGAIN. We don't need the biggest characters RE-explained from origin. And it would be nice if Superman fought something in-human for once. This is the CGI-age for film's sake - a break from the Kryptonians is more viable and would be nice to see here in the 21st century.

Flash :o

I don't really know Aquaman much, but is a better character than Martian Manhunter?

A good script and a serious Hal Jordan, couldn't stand the douchebag hal from the first one.

well in my opinion im not even sure we are going to get hal Jordon if its going to be like justice league unlimited * i think its called* with the black guy whos name i cant remeber

but then again i keep forgetting that this is off the new 52 comics for i dont know what direction that is going with the characters which i havent got a chance to read and im sure theres loads of comics from that series now for i would get lost trying to catch up in

in the JL cartoon it was always batman and superman, i didn't notice anything from the two you mentioned

Superman kinda clashed with everyone at one point or another. Batman really got angry at him a lot, but yeah Green Lantern also was annoyed by him as well. Superman kinda always blew him off, so they ended up getting mad at each other.