More than one house per server
I don't know if it is possible, with the potential for neighborhood crowding issues, but being able to have a home for the different races I play (my dwarf? going home to Duillond?? ha!) would be so much fun!
That and more flexibility in furniture placement would be so nice! For instance, I have a chair sitting in front of a fireplace with a table and books nearby, such a restful spot after a big questing day-- but the books are not actually near enough to reach! Those little touches of detail that we are spoiled with in other parts of the game, in our houses too? Would be wonderful.