Safety is the main reason that the ICAO had made the MPL, so I am pretty sure that such accidents wouldn't occur with a MPL guy...
Where is the difference (in terms of skills) between a cadet and a MPL? it's only a matter of training and licensing. Both of them will have to learn (what is not in the books) as they fly. For me an airline is not a flying school and crews should be experienced enough to handle tough situations. CRM teaches you how to improve the synergy in the cockpit. Having a "trainee" to supervise is an additional workload for the captain, which is the contrary of synergy. I'm sorry if my words irritates you as you seems to be a serious and organized person (more than half of the required qualities for this job!) but I'm only sharing my skeptical point of view. I wish you best of luck in your career and look forward to see you showing us I am wrong
