[Tuor in Gondolin]

From Skip comment above:

few female characters

You want "thought provoking", since PJ's involved, how about
their making some of the dwarves female?

On a less scary, but pushing the envelope, how about
having Tom Bombadil and Goldberry saving them from
the trolls?

I believe that LotR is regarded as a faithful adaptation of the book by the majority, an opinion not shared by most on this board.

My view is that FOTR was pretty faithful (I even generally liked the
decision to have Zena Arwen (although poor Glorfindel missed his one
big scene ) But TTT and ROTk
In TH might they bring in Galadriel to share Elrond's scene and perhaps
have KB to some general voice over throughout the movie?