I have finished my PhD in Biology, with a thesis about molecular evolution of a virus (molecular biology and routine bioninformatics methodology). Only one publication (soon, but still waiting) by now!
But I think this is the chance to change the subject. I want to get into Systems Biology applied to Evolutionary Biology, or something about the Extended Evolution Theory.
I thought about doing a Master on Physics of Complex Systems, or even starting a new PhD on these issues.
What is your advice?