It also comes down to the kind of game you want to play. My group is a bit rusty (we're just picking things up after a year-long hiatus) and so we are also cross-talking a lot. Gee, it's not a speed competition. If 2nd ed. took twice as long, it is still time well spent.All in all, the game our group plays is a nicely tweaked version of 2nd, and we play 2000 point games in just over 2 hours for the most part. It just comes down to knowing the rules.
Your force organization is something other people have talked about, but I prefer the more open-ended nature of the old rules. If anything, I'd like to see them relaxed even more: why not a full platoon of storm troopers?
Basically, we try to make our games scenario-driven. I'd be interested to see your Tau lists. The Necrons of course had a list, but it totally, abjectly and utterly sucked.