It would be interesting to see from an economic point of view whether generally speaking it would be better to do intersection take-offs or derated take-offs. Presumably the intersection take-off might require higher power settings so you'd consume the fuel you'd save by sitting on the ground that bit longer, taking full length and using less power? Any drivers able to shed any light on how this works in practice.
Also I'd be interested to know what the general position is amongst the operators in SA with regard to use of reverse thrust. Many operators in the UK seem to have SOPs directing the use idle reverse only - apparently this yields big savings in maintenance.
Rgds
GT