Plastic787 the reality is this will be completely over subscribed with applicants. If a minority can't complete the process why should they care?
Personally I would prefer if BA had a chat with me for 20 minutes before sticking me in the sim for 45 minutes instead of a day of "psychobabble". However I don't see how any outsider is in a position to moan about the hoops any operator elects to setup for Pilots to jump through. Do not like the hoops or can't jump them then do not apply.
On a positive note BA in the past are very good with regards to interview schedules. If successfully achieving an invitation you will be forwarded a link with a list of dates and slot times allowing you to select which time suits you best. The joys of a proper airline