I was the one who posted this back on the old scans_daily, and it hasn't improved any with age. Excluding Plastic Man, who is the only one who even begins to resemble his main DCU counterpart, the Justice League are terribly, terribly characterized.
Superman is a pouty little boy who sulks and goes "I told you so," being a lot more concerned about what the kidnapping of Dick Grayson means for the public image of superheroes than, y'know, the kidnapped boy himself.
Wonder Woman's defining character trait is that she hates men -- in fact she hates them so much that she can't go for five minutes without ranting about how much men suck and how they ruin everything... while paradoxally enough mocking the male Leaguest for not being manly enough for her tastes. Jeez, Miller, you've already gone this far, so why not say out loud what you're thinking and admit that in your opinion all she needs is a good, hard fucking?
(And I really hate that noseguard! Yeah, I know it's supposed to make her look more warrior-like and all, but a noseguard does not belong on a tiara! If Wonder Woman had worn an actual helmet, then the noseguard would have looked in place and made perfect sense, but she doesn't, so it doesn't.)
And Green Lantern is apparently too lazy to bother even gesticulating for himself, instead using his ring to create two giant hands to gesticulate for him.
Also... "TANK TANK TANK"?! What are you implying here, Miller?