Agree w/ those who said that Natalie P. needed more to do (than sigh and agonize amidst her ever-changing hair!)
Love Samuel L., but he is Just So Wrong in these movies (if you can't believe in it Sammy, then don't do it. His performance is a lot more brittle than those droids who seem to crack at the slightest breeze from a passing light-saber!)
When Obi-Wan left Anakin to die, burning? Very Cold (or hot, as the case may be: yikes!)
One thing I was surprised at: w/ all the emphasis on tying-up loose ends, and continuity, was anyone else surprised that we never saw at some point, a crowd or reaction-shot of a young boy, and someone then scream "Han! Han!"
GG Yours Truly would have included such a scene (though admittedly, I didn't spot the Millenium Falcon: I guess that functioned as, as much HS continuity as was felt needed) Out
Where did the names "Luke" and "Leia" come from? Would have been nice for some sort of continuity there . . .


As far as the dark tone and what age, I really don't know. My ex's nephew wants me to take him to see it, he's 8, but I told him that I would have to see it first and then talk to his mom. I think that he would handle it fine if I explained to him about some of the bad things that happen, besides how can I not take him to see (possibly) the last Star Wars movie.


dagnamit
