Speculation is starting to surface that Glau's character in the new series will be the next model of Terminator.  This would build off her role as a trained killing machine in the Firefly/Serenity universe, and would play with audience expectations.  During the filming of the original "Terminator," cast member Linda Hamilton told the director (and her future ex-husband) James Cameron that having such a large, muscular actor as Schwarzenegger be the killer android would be less impressive than having a thin, wiry actor do the same things, and this influence can be seen in T2's Terminator as played by the far more svelte Robert Patrick (The X-Files) and in T3's Terminatrix/TX as played by Kristanna Loken. Could Glau be continuing this trend? It remains to be seen as the pilot goes into production.