First of all I totally agree with Rainboe's point about taking too much fuel, in fact I think we should have been doing it much earlier than now.
I agree with Flagon's point that this is subjective which is why I suggested we compare some data. The average on shutdown for us seems to be around 2700. I am convinced we can reduce this, ideally to around 2200.
However I still find Flagon's figures improbable. Sure you use 14kg/min getting on stand. It makes 50 to 100 kg difference. Your flight plans are sampled by the boys from the Belgrano. If you are regularly arriving with 1750kg or less I suggest they are going to start asking questions about your flight planning software. Don't you ever get any shortcuts or save any fuel? That is after all the real target.