@aequitas:
What is the most common use for Malta Narvik?
That depends how many Pretzels your friends have had when the Malta action takes place. Too many of those and Malta is barely used by UK as a landing spot after the infamous Taranto Raid. Next turn Italy ignores it and go full bore Egypt. Then USA join the game, add some turns, times go by and maybe the forgotten infantry there is used to reinforce Italy at the late game. But as I said, I don’t know your friends.
But if you ask, not for the common use by the average casual player, but for the ultimate use, by the skilled and brilliant player, how it should really be, how the top ladder player use Malta, the answer is simple. The main purpose of Malta is being a fat bait. If the Italian player is not too drunk, he will recognize Malta as a vital spot to deny the UK maintenance bonus. Of course Cyprus, the Big Gib or Alex will do the job too, but they are far too exposed to be defended, so he will for sure try to take Malta as a priority target nr 1. This will not surprise the skilled UK player, on the contrary, he will expect it and set up Malta for a killing zone. The Italian player will be the one taken by surprise when his fleet is sunk.
But, to set up a proper decent killing zone, UK need a factory not too far away from the action. Egypt would be a rational choice, since newly placed units can reach both Malta and Cyprus. Egypt would be a bold choice too, since it is so hard to protect. But real men don’t use protection, they gamble, so Egypt it should be. And if Italy do capture Egypt with a free factory, maybe they lure themselves to buy a lot of expensive stuff there, money that could be put to better use in the decisive Eastern Front.