[quote=@Dead Cruiser]
<Snipped quote by Sep>

Are details in character sheets, none of which having been accepted yet, set in stone? I can't even find the sheets you're referring to, which I think is undeserving of claiming I'm "snubbing" anything.
[/quote]

In the Characters tab - there's 4 posts.  One is devoted to the JL, one to the Avengers.

They're not character sheets pending approval, they're broad outlines of each team's concept (kept deliberately vague so that further details can be "filled in" in the IC as we go, and to allow room for creativity in character applications)