Morgan needs better writing. I think the character has potential, but the writers are making her very one dimensional. The one time I saw Morgan and thought "o.k. guys, you are on to something" was when she poked her head over the vat of chocolate, sniffed and smiled from ear to ear. That showed that she was more than a cookie cutter character. She had a unique characteristic in her personality that made her different. I don't think any of the CSIs have NOT had a unique characteristic about them that makes them different---Grissom and his roller coasters, Shakespeare, etc. Nick and ?, Warrick and his charity work and gambling addiction, Catherine and ?, Sara and her love for Grissom and she is a vegan--hates the site of meat dead or alive. So, Morgan loves chocolate--show her walking around with a bag of M&Ms after a bad case--let her keep a quart of milk in the fridge that she whips out while talking with Greg and offers him an Oreo.
It is just that her character is soaked with angst and it gets old. She needs a chocolate attack.