I just want to put it out there that the best housing system I seen was Everquest. One zone full of houses and it gives it a city like feeling. I hope ESO housing is more like Everquest than to GW2 Guild Hall system and other games where all you do is enter a zone and its an instance of your house.
I would like to see outdoor, neighborhoods, etc etc etc.
That said, another idea I was thinking about is stables, a place to showoff your horse and what not. I would like to see more details into horses and make them more unique, rather than a standard MMORPG copy and paste mount that everyone gets if they buy, do content etc etc. Same standard mount for everyone who obtains it, I'm so sick of that way, I would like to see more customized, mounts.
Like find a certain horse accessories in a dungeon or from crowns, and make your horse, mount, extremely unique and everyone can tell when your coming because your unique customized horse you have that is different than everyone else.
I mention horses because there is horse racing that is confirmed, and there needs to be more customization with horses, this is 2016 going into 2017, the standard copy and paste horse that everyone has needs to go out the window and ESO needs to start being innovative and a leader, like Apple and Amazon.
Yes, ESO has potential. Guess what, every other MMORPG has potential as well. It's only a matter of... Whose going to stop being a sheep and be a leader and make innovative changes, and take risks.