When you consider how films are actually shot, extreme shallow depth of field and fast wide angle are gimmicks. I actually am starting to find too much bokeh distracting. It was nice to have when the 5D Mark II came out 3 years ago. We've moved on.
Besides the sensor in the Blackmagic is hardly what you'd call small chip.
You will see the softness big time on a huge screen - when compared to other cams on a huge screen. However, put some beautiful naked girl dancing with another beautiful naked girl and I really doubt anyone will give a shit. They'll call you the new Coppola :)