I like Crystal. For starters, she shares a name with my actual wife. She has control over the four elements: earth, air, fire, and water. By all rights she should be supremely powerful. The combination of those powers should make her the sum of characters like Human Torch, Hydro-Man, Terra, and even some components of Storm's powers as well. Next to Black Bolt, who can destroy at the speed of his own speech, she's easily the most powerful Inhuman.
So what happened? When introduced, she fooled around with Johnny Storm. With the Avengers, she married Quicksilver. At some point she had a retroactive affair with Sentry. Now she's been handed off to Ronan. Its like she's become the bed-hopper that some writers wish Sue Storm was.
So is Crystal doomed to arm-candy status? Will the day ever arrive when she comes into her own and has non-relationship based motivations?