I would love a one special server where players can only have one character slot.
They have these in some of the old MMOs, but they do not do it anymore.
The advantages of having only one character on that server can be pretty huge.
Firstly, you know that person knows his charter pretty darn well. (It's the only one he plays)
Second, you get to know the community a lot better, because the population is 8 times smaller, name wise. Also, people really watch how they act, because that ONE character is the only reputation in their game.
Third, it helps a player really get into their role. Instead of juggling 8 characters, you dive into your role for that one character and it gives a sense of pride and ownership.
I know this is not a popular idea for a lot of players, but i bet there is enough to have one server for it.
Once you try this type of server, it is clear why is is a good choice.