On 67 this morning BC and quiet car were in the rear. At the low platform at WAS they didn't open the doors of the BC car, they made the BC pax walk up through the Quiet Car to exit. Not exactly the best way to treat people who pay a premium.
Remember...Only two conductors to open doors (some times the LSA or a deadheader will assist with detraining in WAS, but we're not suppose to (as a LSA, because if I get injured I am stepping outside my craft duties, and a deadheader because they're not on-duty), so you can't plan on that), and there are six coaches. Someone is going to have to walk, and it makes more sense to spread out the open doors for efficiency, that way you don't have 30 at one door, and 200 at another. Regardless, you're still going to have to walk down the platform in the same direction anyway.
Well, yes, of course, but in the old days, when Business class was in the front, they opened the rear door of the business class car or the front door of the car behind Business class. (Train 67 doesn't have a quiet car to the best of my recollection.) Sure, BC passengers had to all exit from the back of the car, and they shared their exit with the coach passengers behind them. But under the new system, they're at the end of the line, not the front. And given that they've paid extra money, shouldn't they be given the opportunity to exit first? It doesn't really change the distribution of open doors on the train, it just makes a mirror image.