I have some ideas to make housing more usefull in the long run
These are all balanced around the idea that housing and items can be bought/earnt for free
Beds - sleep in and get a small exp boost
Gardening - Small plots and pots you can put an alchemy plant in to have it grow over time, couple day cool down before it grows again (only need to plant an item once)
Mail Service - You know how if you miss a day you lose out on mats? Well invest in this perk and even if you dont log in the mats/mail will be delivered to the mail box.
Wayshrines - Got enough gold? Pay for a wayshrine to be added. Come on ZOS, think about how many houses you may sell from people who love the house but not the location