Imagine you are sitting in the theatre getting ready to watch Episode 7. There's been more than 30 years since ROTJ, so there's a ton of backstory to explain, and all of the books aren't going to released by then, so we still don't know all of what happened - Why the resistance isn't in complete power, why the first order isn't simply called "The Empire", etc.
I'm assuming the opening crawl will attempt to summarize much of this - but how much do you think will be left unspoken? Do you think there will be bits of dialouge that explain things that seem unnecessary? Example:
Leia says to Han :"You KNOW I can't go with you, Ever Since Mon Mothma's death at the hands of Admiral Ackbar, I've been chained to this basement because I was framed for her murder!"
Obviously this sentence is exxagerated - but I kind of hate it when movies really try to spell things out for us like this - because while it may explain a few things, it feels contrived, and then when you re-watch it, it feels even more out of place. Imagine watching ROTJ and C-3PO says to R2 the entire plan to rescue Han Solo and that Lando is undercover, and that Luke has been working on a new lightsaber and trying to complete his training, etc. It would feel really dumb.
So do you think the opening crawl will be enough to bring us up to speed?