I'm as commonly knowledgeable as pax get, and don't scare easy, but as it stands I do not trust the 787 to always intelligently 'ground itself' in an emergency. Plus, the emerging pattern is one of unpredictability - what other design/production issues remain and when will THEY arise?
I'm confident it'll be sorted out of course, for many varied reasons, some already mentioned it HAS to - in effect the 787 is 'too big to fail'