My concern about the postal vote is not the complexity of the process (though it is nonsense) but the lack on control and anonymity. I think it reduces what should be a proud moment to a farce, and it allows bossy people to take control of the other votes in their household: I'm certain that will happen. I also think more widespread ballot-theft and fraud is fairly likely. Even if it doesn't happen, it's a plausible story that anyone losing can put about.
All in all a disaster for democracy.
B decided that he wanted to protest about the voting procedure more than he wanted to vote for any of the candidates, so he spoiled his ballot paper with a complaint, and faxed his MP to tell him what he had done. I hope a lot of people do that kind of thing.
For myself, I haven't decided how to vote yet.