a) Yes, Peter Jackson continues to take out the interesting bits of the films and leave in the battle scenes when it comes to the cinematic release.
b) Yes, the film is definitely better for all of the bits that were put back in, particularly the section around Beorn, the dwarves crossing Mirkwood, an early scene of the dwarves in Laketown, and the extra bits in Dol Guldur. The film felt more rounded, and I definitely enjoyed it more.
c) Yes, I am now looking forward to the extended Battle of the Five Armies more than I am to the theatrical release, which is exactly how I felt just before I saw the Return of The King.