Carrying on the theme that I have tried to impress on many people here, try not to restrict yourself to a particular application of the subject matter that may inhibit your "employability".
While fusion and fusion reactors are certainly big areas of application for plasma physics, these are not the only ones. Most people, especially students just starting out, do not realize that another area in which plasma physics is widely applied is in accelerator/beam physics. In particular, the plasma wakefield accelerator scheme combines both accelerator beam physics with plasma physics to create what could possibily the next high-gradient acceleration mechanism.
http://www.slac.stanford.edu/grp/arb/e164/
This is where expanding one's horizon may be beneficial. What you learn and study, although it is for a particular application, can actually be quite general and have significant relevance in other fields that you may not know even existed.
Zz.