Hey there @amokamoeba_ESO,
Do you happen to have any add-ons installed? We've had a few reports of long load times that have been resolved by removing add-ons.
To test this, head to My Documents\Elder Scrolls Online\Live, grab the AddOns folder, and move it to the desktop. This will preserve your add-ons, but remove them from the game. Once that has been completed, launch the game and log in, then let us know if the load times decrease.