In an earlier post I spent some time wondering if it might be a good idea to level a Shaman alongside the new fleet of Death Knights guaranteed to appear once Wrath hits. A lot of commenters were of the opinion (correct, I think) that the desire to avoid hugely crowded areas is probably better served by leveling an alt to 58-60 and sticking it in Outland. The alt can then await the surge of Death Knights who decide to continue leveling, and who should have some experience with its playstyle by then. While I'm still most likely to level my main to 80 once the expansion hits, having an alt in a less crowded area of the game is pretty appealing. For all I know, the Borean Tundra and Howling Fjord will be packed to the scuppers too. I play on a laptop with a wireless connection, so my gameplay tends to suffer badly when the area I'm in resembles Los Angeles during rush hour. Avoiding overcrowded areas is no small thing.
My realm's considered medium population, but we've still got enough people that, if even 10% of the population typically online at server high time decides to roll a Death Knight once Wrath is released, Eastern Plaguelands is going to be in total gridlock for a while. The same thought occurred to a few friends, who wondered if they might be better off spending a week or two on low-level alts in an empty Azeroth while waiting for the furor to die down. With that said, that's not an ideal option if your guild wants to start raiding as early as possible, or if you just don't want to be left behind by guildies leveling to 80.
I'm genuinely curious. Let's say you've bought the expansion, installed it, and you're at the character selection screen on your usual realm with the option to create a Death Knight, hit your main, or head to an alt. Given your own personal circumstances, which do you pick, and where are you going in those first few hours?