What I like, Arthur is that your rollbar looks like it doesn't seem to restrict lateral movement of the head. And the integrated headrest seems to prevent the rollbar from being directly over your head, which would also be fatally dangerous if you're not wearing a helmet.
Can you push the seat back as far as you can without the rollbar?
Of course, I can't judge what the effect would be if someone were to hit the stationary car, for example. It is so difficult with the Morgan to assess whether it is safer with or without rollbar, depending on the situation of an accident.