Re: They are going ahead with a Justice League movie
You could handle all the introductions in the title sequence. You dont need long or complex intros to these characters.
Agreed. I bet it could be done with no more than ten seconds per hero, all in moving pictures (to the musical soundtrack of the main title), and possibly even in five seconds each.
“A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP” — Leonard Nimoy (1931-2015)