How common among Christians today is Kierkegaard’s position that you are a better Christian if you still have faith in spite of a lack of evidence for your belief?
Not overly accepted in light of historical textual criticism, which broadly suggests the Gospels are accurate. Most Christians today believe that the current evidence we have for the Resurrection is precisely what we would expect if it happened. This is a philosophical position, not
precisely a historical one. I am aware of very few mainstream scholars who reject the empty tomb, although Ehrman has said different things about it at different times.
Now if the difference between what evidence we had and what we would expect was different, this leap of faith may be necessitated.