I think that people are maybe missing the point a little.
This is clearly a declaration of the BA mentality.
I, as an experienced Airbus pilot with several thousand hours on type plus several more hours on more basic aircraft types, would not pay £250 per hour to prepare for an assessment which would be assessing me for a position where I would be flying my present aircraft type.
As some earlier posters have stated; I have already proved that I can fly the aircraft. I have already proved that I can pass numerous assessments in terms of base checks and route checks.
The only concern for BA should be my CRM. If they want to assess this particular personal quality then they are welcome to use an old clockwork aeroplane simulator.
What they cannot expect is for me to have the same manual flying skills that I had several years before I flew a FBW aeroplane with a sidestick.
Is it any wonder that they have had a distinct lack of interest in their recent recruitment campaign?