Add Ability to default Landed Cost Method

Currently, there's the ability to define manual journals to apply to Purchases by Value, Volume, Weight or Manual (a recent and great addition)However, if you perform Landed Costs (i.e. put a Service Purchase in, then 'Expenses' to a Purchase Order) it will always use Value method. This can be changed, but you have a remember each time. It would be great to have an option in General Settings to default this to a particular method from that dropdown list (i.e. Cost, Weight, Volume etc.)