One of the advantages of the MPL type of training is that cadets learn CRM in the cockpit quite early in the program. Like all skills it requires training and practice. Arguably formal CRM/MCC is useful training for single pilot IR operations – in fact the old single pilot AOC ops would have recurrent CRM training. The preparation for top of descent briefing, which in the real world on a short sector will take place before top of climb, requires a disciplined routine. Am thinking of the CAA video posted by @Peter, where absence of disciplined routine seemed to be the norm.
Some airlines have various gates on the approach, where if checks, speed and configuration are not established, the SOP is to initiate a go around, not just at DA. In the video by the CAA, just dialling in a rate of descent above 1,000 fpm on the localiser would have prompted a go around call, let alone being out of CDFA limits. Unfortunately the EASA IR remains highly choreographed and the two go around are at DA/MDA. The candidate if he decided to go around before, because he judged he was unstable/at limits (outside speed limits, 1/2 deflection, 50 feet on CDFA), would be rewarded with a partial for that element of the test. For better or worse, MPL training has a greater focus on stable approach criteria and going around early if conditions/situation require it.
This recent breakdown in CRM will no doubt make the CRM recurrent training rounds:
https://www.gov.uk/aaib-reports/aaib-investigation-to-boeing-737-86n-i-neot
Indeed one will need high SOP/CRM standards for single IFR operations but that implies one is using his aircraft & systems to the max performance to it’s tight minima? and maintain decent flying currency?
Disciplined routine & high standards goes with low margins & max utility? take the go-around on unstable approach parameters (1/2 scale & -1kfpm), how much that’s relevant for someone who only flies SEP on ILS in 1500agl clouds and 10km visibility?
I can’t blame someone who was told to only fly 800ft agl ceilings to have no routine & drills at all, he can do safely without 
