The big improvement on safety imo was the seamless transition into a go-around flown by the PNL (Pilot Not Landing). He stays on instruments the whole time and never breaks the scan.
After doing this a few times it does not seem sensible at all to fly the approach on instruments to minima, throw away your scan, look in vain at a distant eye-focus and then try to pick up the scan again as you launch into a go-around.
There is also an added element of pride in handing the aircraft over to the PL perfectly placed and at perfect speed to flatter his subsequent landing. It kept both pilots firmly together in the loop throughout the flight and avoided the slightly more disparate roles of simple PF flying and PNF doing the paperwork.
Many people who were new to this were very uncertain about it and some quite opposed to it in the early stages, but few failed to appreciate it as a better way of keeping both the crew in the loop once they got used to it.
istr that at Go we swapped roles sector by sector but with Captain taxiing as only he had a tiller. Capt taxis, PL (whichever pilot it was on that sector) takes off, PNL takes control shortly after t/o and operates the sector, briefs PL on the approach, landing and g/a, flies the approach to minima (or when PL calls visual and continues to land) and awaits the PL's call "landing, I have control" or "Go around". In the event of a g/a the PNL remains PF, flies the g/a and next procedure/diversion etc, briefs again and flies to minima on the subsequent approach.