Why not (in housing expansion) allow for an infinitely expanding house? Currently it's said you'll be able to expand your house, but no mention was made of making it infinite. If you could make it go up with 'floors' forever, then the choices are limitless! This would eliminate almost all needs for alts I can think of (housing wise) minus using an alt to legit cheat by doing something with an alt that a main character can't do, like make crystals for instance.