I've figured all kinds of neat inventions could be made from radioisotopes. What holds it all back is just how effective they are at killing life. It is amazing at how little radiation energy it takes to kill a man and the amount of energy they have! I thought it would be people living in space that would be the source of innovation.
Space is a already full of radiation and people up there are necessarily in self contained environments. Contamination is easier to manage.