But maybe not for the reason you think. Beatus on Kul Tiras posted a pretty well-written complaint about the layout of Wintergrasp on the EU forums, and new blue poster Ancilorn speaks up with a little insight into just how Blizzard was planning to keep down the lag in WG. They were planning to spread players around to the towers in the southern side of the zone, thus allowing hundreds of players to play, but in a few separate groups conquering different objectives.
The only problem, says Ancilorn, is that there's not enough incentive to split players up -- people who go south miss out on honor and daily quests, and there's not enough reward to make them go that far. He says a retuning of the map will eventually be done to try and spread out the battle a little more.
Which still may not work -- the thing about Wintergrasp is that, since it is uninstanced and generally unorganized, players tend to run for the biggest battles. So even if you do have nine objectives around the map, you'll still have the challenge of spreading them around (maybe have the towers go down faster if you're attacking more than one at a time, or a balance set up like that).
Blizzard definitely tried tackling a tough problem in setting up Wintergrasp, and it doesn't look like they've got it quite right just yet.