I think that the World Visit should be expanded beyond the three Cities.
I'm sure the reason it's not is because it's a technical feature that may be complicating or excessive engineering work to imlement but a feature I think is important to have.
I initially thought, having the Marketboard and retainer at running distance from the Aetherite was the issue of why Limsa was the most populated area.
After seeing (EW Location)which also has the MarketBoard and Retainer at running distance. The city is now relatively empty.Old Sharlayan
I understand that there are people (pre-expansion MSQ) that don't have access to other cities as part of the problem. Because friends wants to play with friends new to the game.
However, I think having World Visit will help distribute players beyond the initial three cities (Mostly Limsa). Maybe not by much but it'll be something to make the other cities feel more alive.
It's pretty sad to see that the city that's really vast look empty especially where it would be considered a Townsquare/Market because people can only shop world travel in Limsa.
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Although in Balmung Ul'dah is pretty populated I think but in my experience in other datacenters it's not very populated I think what may help with the population distribution is to move the Aetherite Crystal to somewhere like the middle of "The Gold Court". Still not better than Limsa's MB and Retainer distance but I think it's better than having it in a hole in a wall that you have to leave.
I wouldn't know how to solve Gridania, (HW location)(SB Location)Ishgard,or (ShB location)KuganeCrystarium.
I could be in the minority and most people may think it's fine that Limsa should be the main Hub of the game. I personally think methods of distributing players will create more culture within the World and Datacenter.
Edit: Formatting by putting in the expansion name before the hidden sections of the post.