Today Turbine let players know they are listening to Bullroarer feedback and are looking at minimizing Premium Housing upkeep costs.
“We want all players to feel good about any housing they choose to purchase with Mithril. We have been listening to the Bullroarer feedback and are now looking at changing upkeep costs to make them minimal and generally non-burdensome.” – source
Turbine also posted about how many kin houses kinships will be able to own.
“Kinships will only be able to own one house, total. Individuals will be able to own multiple.” – source