ok, looking at the pictures, i can see why you think he should have. i can live with that :)
(plus -- served in WWI and then had his military career cut short due to shell shock? he wouldn't have had to do much prep to get into the role :)

you should DEFINITELY see the petherbridge ones -- it's just the first three vane ones (poison/carcase/gaudy) but they're "practically perfect in every way" -- obviously, there are rearrangements/editings which are necessary when translating something from book to screen, but they still rang true to the hearts of the stories for me. and harriet walter as harriet vane is just as good as petherbridge.

i need to rewatch them -- i bought them when they came out on DVD :)

(the thing that threw me about the other icon was not the offsetting per se but the fact that it made it read mis-ordered to me:
SIN
the worst
passion can commit
is to be joyless

but it's mostly me nitpicking.)