Like Birka. First time I have played on a world from ground zero so don't have anything to really to compare it with.
Cons:
Getting trades when you are fresh in a new age is harder to seems when outside your guild, and inside if you are one of the first of that age.
BP also seem to be harder to come by because you have more members after them with less GB and not seeing many through aiding.
The biggest dislike I have is seeing all the Arcs already on a world that is not quite 3 months old. They were showing up when Birka was a month old. For a equal footing for everyone starting world, several had to spend some serious cash just to get that one GB and others are having to in order to get the goods. (That plus some spent to quick advance to start making the goods.)
Pros:
Lots of friend request.
Seems there are more newer players than repeat players
Leveling up tavern is faster due to so many friends
I had forgotten how "hard" it was to start a new city as far as getting those low level trades and staying in the lower ages to build up good stock. Also forgot how bad the troops were, lol. It is great being in the same age, or close to it, as any new guild member I might get in the guild. They seem to communicate better with you than when you are in a much higher level and they are in BA or IA. Glad I started in Birka, but not looking to start in another new world like this anytime soon.