It was a satisfying end to a trilogy. I don't know how City of Glass can be better than it is. It's reminiscent of Yuyu Hakusho (what with the demon window opening in the sky and all)
, and Angel Sanctuary (what with the incest. when she mentioned Angel Sanctuary, i knew that was Cassy Clare's inspiration)
. Generally, the Mortal Instruments series gave me a feeling of nostalgia for anime.
What can I say? I just love anime, and I love Cassy Clare for loving anime.