that would create a SW universe that could not have the fan-base of the current. the consequence is that this forum and this conversation would not exist without Anakin Skywalker, Obi-Wan and Qui-Gon stay, stuck, in Tatooine. Maul is never defeated (i dare not say killed....), the clone wars, if they happen, take a different path completly as Dooku wont become Palpatine's Apprentice and so on (he made the order for the clones). thus eliminating the interest we have in SW and ruining Ep I-VI completly.

i don't know about the game but in Ep. V, in the holo-call between Vader and Sidious, Vader kneels, that's not exactly sitting but i think it serves the point. although you make an interesting point, until now, every holo-call i had in the game was a standing one and it made sense. possibly, its a matter of respect, for example when you vid-call to someone (in real life) you will make sure you look decent out of respect, same here, possibly standing conversation is just the norm.