I think its 4 because of the amount of background, options, dialogue, pathways to play that they are bringing to the table & it would literally be to expensive to go to 6 man party - either that or we will be waiting another 2 years for the finished game. Im an old school gamer too but I quite like a smaller party to manage - not that 6 is bad - 4 gets the balanced party fighter/cleric/thief/mage.
I do think Larian studios listen though so who knows what might happen by the time the game is in its final state - but for me 4 is enough to enjoy.
