On the general rant, contrary to Richards opinion I don't think you can compare a Morgan to a BMW nor should you. It's not a case of the 'Emperors new clothes' IMO its just that we know these foibles exist but accept them in order to avail ourselves of and enjoy the uniqueness and character of these cars. You know that for the sum of the parts of the two cars you get more in the BMW. You have touched upon it yourself: volume allows so much more. With a Morgan (or similar - not that too many similar still exist) it's more than the sum of the parts.
If it were not so, why don't you buy another manufacturers three wheeler trike that gives such great visceral pleasure? There aren't any. Why don't I buy a 911 convertible instead of an Aero 8 or a plus 8? Because it doesn't excite me, because it doesn't stir me. It's a different experience.
It's a thrown about cliche but a company like BMW probably spend as much designing their ashtrays as Morgan do their M3W. Whilst I don't know that for a fact I'm pretty sure it's not far from the truth. The point being, selling 1000 cars a year means they'll never be able to spend anywhere near what the big boys spend in R&D. If you expect them to, we will never have affordable niche cars. We will never have Morgans (or had TVR's or Nobles) all of which are reknowned as good characterful cars but flawed with the 'handbuilt' effect.
If we didn't 'accept' the issues, or at least accept that it will take some time to work through them, we would all be driving mainstream Golfs or as per your example BMW's. Without sounding too harsh, if you want reliability and superb fit and finish, buy a mainstream manufacturers car. If you want character and soul (and accept the accompanying issues) buy a Morgan. I for one like having the choice.