If anything it was worse. Napoleon does not see the massed columns topping and descending the Heights.
Incidentally, this is not a criticism of HLG's FOW system. I am rather critiquing the FOW concept and the notion that any one FOW is the "Correct" one.
Just a little question for your understanding of Austerlitz:
1) could you show me a reference where it is stated that Napoleon actually saw these movements you're talking of?
2) for the later orders he issued during the battle he moved his position on the Pratzen heights and had a much better view of the Allied deployemnts...and thus was able to redirect his reserves consisting of Bernadotte's corps...as he had changed his plan from the initial one, which was to turn the Allied right under Bagration, to the newly developed opportunity of splitting the Allied army in half through the centre...
a big part of being CinC is understanding the "big picture" and placing trust in those carrying out the task that they were given, without having the ability to interfere...as I understood you you are saying that you don't like the FoW system...well I think it'S very realistic...as CinC you give the order to advance to a certain place for example...and you just don't see exactly what is going to happen:
let's take a well known example: the Pickett-Pettigrew-Trimble Charge up on Cemetery Ridge: Pickett only saw a huge mass of men converging on one point...he didn't see what unit he was engaging, how his men were doing, he only saw some colours and a huge cloud of smoke...
after the attack was driven back, his men defeated...only then he realized the magnitude of his defeat...it's actually well shown in the "Gettysburg" movie...
so basically, as CinC you see very little of the field, unless you have a really dominant position, from which to issue orders, and even then, smoke will somewhat blur the picture after some time...and not even Wellington saw all of the major action, even though he rode 5 different horses until they were blown on that day at Mont St. Jean
having one of these hills at your disposal, while the enemy lacks of one, might be a winning factor, but not every battlefield provides them (obviously) -
Conclusio: if you play as realistically as possible, you have to accept the simple fact, that you have to have a plan first, which is carried out (your initial orders), and with any luck, it's a good plan...certain things can be changed during a battle, but only so many....you'll never see the entire action going on, and if the enemy uses the terrain to his advantage maybe he'll outwhit you and you'll be surprised by his appearance some place you would have never expected him to be...
a little story of Austerlitz on that: after the initial attack of Soult on the Pratzen heights, Napoleon knew very little of what was going on, and when a column of unidentified soldiers appeared on the ridge line he even asked: "could those be Russians" - being very worried that his entire corps might have been lost - as he didn't see anything of what was going on...the situation at Napoleon's HQ at Zurlan hill was very confused...and some things were cleared up by incoming reports AND the movement of his HQ to the Pratzen Heights...
CvC