How much science is delayed by the extra 2+ years? Looking at the 'project plan', is the Clipper's arrival (and delivery of data) on the critical path for research? And how much research?
I'm picturing a lot of scientists and research projects waiting an extra 2-3 years, and then all the research, follow-on missions, etc. also delayed. Essentially, the decision might shift everything in this field 2-3 years further away, and then centuries from now human habitation of other planets is 2-3 years later (ok, a bit exaggerated).
But seriously, maybe it's not on the critical path or doesn't impact that much. Is anyone here familiar with the research?