Don't WQ give you 250 guild rep each? I think they do. That makes exalted very fast to get. Making a low level fresh alt to grind leveling quests would probably be slower...
I know they bumped the amount per quest back when they took out all the cool guild perks, and if WQs work, I guess that might be better. At this point though, grinding WQs sounds just as bad as leveling an alt.
When Khane asked about the mounts, I remembered I had a level 80 alt in F&F with Serious Casual, which should have the cheves; logged him in, and boom, no guild. I guess they cleaned the roster some time in the last 3 years. Wah wah wahhhh....
I wouldn't use war mode as a PVE'er to try and level faster, if you don't run into any griefers it might net you a small gain but even one asshole can cost you far more than you would ever gain in increased xp.
It depends on the class/spec I was on, to decide if I was going to do warmode or not. Stealth or Tank, would be 100% warmode, and mass pull tank is the fastest way to level anyway. If I was Mage/Hunter/Shaman, I may think twice. For priests if you want to level Disc, it is, still, near unkillable in 1v1 and even 1v2.
That is how I will decide on warmode status for alts. When it comes to the first 16 hours of release, I dont think you will see enough of the other side, on your own islands, for it to be slower. A greifer looking to pvp straight away, and actually able to find someone, before boredom sets in, would need to have played beta and know where the other side's quest hubs are. Then, if they rush straight to the starting areas they would get zerged, and rushing to outlying areas will be, either too sparsely populated to find enough people to grief, or as the day/night progresses, a zerg fest too.
On the other hand, thinking more about the opposing islands on release day, I may change my original plan of 100% warmode. I can remeber at least 1 area per outpost that will overlap with opposing quest areas that I am unsure of thier phased status. If they turn out not to be phased, they will probably be swarming by the time I can get there. I may wait until 118 and do all the outposts in a row. Since toggling warmode at that time will be rather easy. You dont spend a whole lot of with each outpost, since there are only 15 to 20 quests, at most, for setting them up.