He was a very dodgy Arthur in the very dodgy Marc Warren version.
He was good though and a few years extra on him and a remotely faithful script would work wonders.
The thing about Quincey for me is he has to be physically attractive.
Lucy is given a variation on the judgement of Paris.
Jack represents wisdom.
Quincey represent masculine beauty and physical strength.
Arthur represents wealth and social position, it's clear what Lucy is interested in most (but a Count always trumps a Lord).
The Count is like Lucy's soppy girl dream come true.
With him she gets all three at once but with a terrible price.