Give it another 3-4 weeks until worrying too much about population balances. You have a lot of people still enjoying the new content, hell some people haven't even started it yet as they didn't preorder.
EP has got an insane population right now for whatever reason but I don't think it will stay this way. Another month and we'll know for sure!
EP population change = haderus day crew switched over. EP Was already overpopulated during the day on Trueflame before as well. What I've seen on Vivec currently is DC owning oceanic except on days where EP doesn't zerg emp first, and EP owning the rest of the day outside primetime which is still fairly balanced but EP pop locks much much quicker than the other two.
Jadokis - AD Redguard DK v16 AR 18
Jàsènn - AD Orc Templar 47 AR 10
Jessèn - AD Dunmer DK v16 AR 9 - Former Empress of Blackwater Blade
Tekllin - AD Altmer Sorcerer v16 AR 18 (Ret.)
Tekklin - AD Bosmer Nightblade v16 AR 12 (Ret.)
Jasenn - DC Imperial Templar v16 AR 18 (Ret.)
Jasènn - DC Orc Sorcerer v16 AR 15 (Ret.)