As a non-professional, I hesitate to stick my nose in here,
The FOHE seems to be the fundamental difference in the two alternative power-plants.
The Trent would appear to have chilling problems, due to low flow of hot oil, when power demand is low.
Is it beyond reason to use an "electric blanket" type heater, thermostatically controlled, for those low-power, low fuel-flow situations when this fuel-icing becomes prevalant?
I appreciate there would be a substantial electric load involved, but the engine would have plenty of POTENTIAL power-reserve to cope, it being my understanding that the problem ONLY occurs when there is very low power demand in a very low ambient temperature..
another source of heat may be bleed-air?
or should I keep my nose out?