Personally, I think the whole Pure, Prestige and Dynamic thing creates more confusion than light with customers unable to have what they want thanks to the arbitrary choices made for the three bundles. I'm going for the petrol engine and have to have the dynamic. I can't have a manual transmission and I can't have the better quality leather because I then have to have the over-the-top sports seats which I don't want. And so it goes on.
It would be much better to choose body style, engine, transmission, colour, interior grade, body kit (painted sills etc), options and so on. Why they have chosen to impose these restrictions, I don't know. Lack of flexibility on the line? Maybe. If they think it makes spec'ing the car easier, they're wrong.