I'm almost finished at my PhD, and I am currently looking for postdoc opportunities. My current field is quite a small one (a rare disease), and consequently all the postdoc positions I've found so far are in other fields - but still within biological/biomedical sciences.
At this stage I am strongly considering a move, but I also want to maximise my career potential. I have interests - and have previously worked - in other fields, but don't feel tied to any one field.
My question is, what are the pros and cons of switching fields at this stage? How much weight should I put on my subject knowledge and publication record in the current field vs. transferrable skills? And how much weight would a potential employer put on these aspects?