[Tuor in Gondolin]

I think a two-part Hobbit would be a smart $$$
and story move for the project. Some of the bits added are
suggested above, plus it wouldn't be necessary to cut
out some events as would probably be necessary in
one movie. As to where to cut it there would seem
to be two possibilities, either as Gandalf leaves
Thorin and Co. and they enter Mirkwood, or with the
dwarves beiing captured by the giant spiders.
In the latter case there could be a longer ending of
Bilbo's return in the book + a suggested hint of the
Ring taking hold of him.