Ariel Sharon's grave condition has become a political event that can be and will be manipulated by the succession crisis in Jerusalem and the Sharon family troubles.
When and if the life support systems are turned off, Sharon will fail quickly if not immediately. Therefore all preparation of the state funeral now turns on that moment: security, transportation, accommodation. The funeral will be the gathering of the clans that defines the last of the 20th century order of battle: the ancien regime marching behind Sharon the way it marched behind King Edward's hearse in 1910 in London.
More, the funeral will be a sharp break with Sharonism, and this does not favor the unremarkable Ehud Olmert. There is motive for Olmert and the quarreling players of the unborn Forward Party (including the decaying Peres), to delay the funeral as long as possible in the 100 day run-up to the election in order to feed on the sympathy vote for a fallen hero.