RforRobert, usually the advice here is pretty solid but I suspect the previous posters maybe didn't read all of your post. After only 2000km you're not likely to be dealing with any sludge and all the other properties of the oil will be well intact.
Mitsubishi servicing schedules are at 15,000km or 12 months and they do recommend that this be applied "whichever comes first".
The reason for this is not so much the oil but those fluids which break down over time, almost regardless of use. Most importantly these are brake fluid and coolant which MUST be changed according to the schedule. As for oil, it does have a shelf life and that does depend, in cases of very low kilometres, on things like where the vehicle is stored. If inside a garage then the oil will last longer than outside. Ditto for other components on the car which may be affected by weather - wiper rubbers, some suspension rubbers and seals and so on. A regular check by a mechanic will get these before they become an issue. Fuel too - leaving a car outside can result in a lot of condensation in the tank.
If you've kept the car garaged then I wouldn't be too concerned about doubling the interval, bearing in mind that when you do have it serviced it will require a more expensive service to cover replacement of other fluids.
If work is so terrific, why do they have to pay us to do it?