The problem with increased lag I'm noticing is not just with WG, but all of WOW.

I'm on Uldaman-US, a medium pop server. Once 3.1 hit I noticed that my latency about doubled. It's not bad, but I went from hovering around 150 to hovering in the mid 300s. Instead of always having a green icon, now it's usually yellow. Not a big deal to those suffering world crashes I know, but it seems to indicate a deeper problem than just WG.

This is true pretty much everywhere in the games world(s), high or low population. Dalaran, WG, Loch Modan, or even out in some desolate zone by myself.

Latency does increase at higher pop times of day and places, but the increase I'm seeing is across the board. Low pop times/locations are around twice as laggy as previous low pop times/locations, and high pop times/locations are around twice as laggy as previous high pop times/locations.

It's not my connection because I get the exact same latency increase on different computers at different locations (home, work, etc.).

The increase I'm seeing is too constant to be from a sudden influx of players. I'm guessing something in the 3.1 code is taking more processing.

I don't know why they don't make WG just like the Bloodelf starting area...

Bloodmyst Isle is on it's own server just like all the different continents. You have to zone into ti and it isn't a limited number of players.

Make it so u can only get to WG by portal or Blizzard's automated flight paths and u can make it a zone on it's own...

Actually no they're on the outlands servers.