It's another (perhaps pointless) detail but it just occurred to me, CFS2 modelled ambient air temperature through its "advanced weather", CFS3 doesn't seem to.
Proof? With the aircraft sitting on the ground on a summer afternoon the oil and coolant gauges are both reading 14°C, just a bit chilly for a late July day. Then again with the same aircraft on the same airfield heading for a midwinter night patrol the gauges are reading, surprise surprise, 14°C. Surely the winters of England are warm compared to what we have up here but I bet they should still be colder than their summer days. Admittedly CFS2 had the very same figure by default but at least it could be changed manually.
Anybody out there capable of proving me either right or wrong?