I think (hope) it's pretty much a given that experienced pilots can fly the aeroplane. The selection process is more about weeding out difficult individuals with whom one would not wish to share a flight deck. In my years of flying I've not come across many people who really struggle with the aircraft. Come across plenty of knobs though - just ask any easyjet gatwick FO about the "3 B's".
Again I should be at pains to point out that no company is without these individuals and I'm not for one minute suggesting BMI has more than its fair share. I do hope however that whatever the final solution to seniority et al (of which lets face it we have no control), we can all live happily under one roof without some days out becoming a real drag. Preferably with the baby and regional guys included.