Why is this not the solution?

[LaylaTsarra]

I'm sorry, what? Are you saying people are able to buy houses on servers that their character isn't based on, so someone with a character on Tonberry could buy on Kujata with that same character, or someone from the Crystal DC can buy on Aether? Did I read that correctly?

They can if they have a character based on that server. And no you cannot buy a house, purchase an apartment or join a FC on a server you are not resident on. Users are currently allowed one FC and one private house per server. Will that change with new rules in 6.1 personally given the growth of the game and SE's apparent inability to meet user demand I wouldn't be surprised to see those rules changed and have housing limited to one personal and one FC per account.

We will hear soon enough what those new rules are going to be hopefully soon after xpac is released.