“As premium cabin interiors become more
customised, the added weight of customisation must also be taken
into account as a factor in the overall loading of the
aircraft... A heavier cabin in the front section where premium
cabin products are normally placed therefore could reduce the cargo
loading capacity in that section.”
Source: An Airbus Spokesperson, discussing
nose-heaviness issues with the A340-600 program... and some of
the difficulties that they are encountering.