[quote=@iGeorge]
What kinda dc characters are going to be allowed here? Only the Silver age ones or maybe all of them, edited to fit the setting and the mood? Prehaps the JSA could be involved?
[/quote]

Yeah it's all about the spirit of the Silver Age. You can still be characters created at a different time, just re-imagined to fit the tone. Just like what was done with more modern villains in the Batman '66 comic book. 

Did you have a particular JSA member you wanted to play?