i want the adventure house thing as well. if you cant build one yourself, even being able to buy a house in a town with all your loot and fill it with furniture and boxes full of coins would be nice. i want somewhere to store all my elf skulls as well, just so i can keep count. with adventure skills i could make them into totems and perhaps decorate the place with them. or maybe pay a craftsmen to do it for me.
having something to do with the money and titles you get would be really nice. things like a player owned shop, does not need to have a good economy simulation, just invest money in it and it gives a small return. same with player owned farms/brewerys. being able to get ahold of steel or leather, and pay a craftsmen to make better gear for you, or even to decorate the gear you have would be great.
also, i would love intercity trade as a way of getting money and influence. there was some japanese roguelike in the general forums a while back, i forget the name, but there was a large number of quests along the lines of "courier these items in this time period to this city", as well as trade goods with different prices which you could buy and sell yourself. this really reminded me of great old games like elite, and the wing commander: privateer, both of which were space sims with a big trade component. it was amazingly addictive buying up food goods from farming worlds, then selling them at mining colonies for raw materials, then selling them at a manufacturing world for luxury goods...
i think a lot of that stuff, sans perhaps the player owned shops/businesses, would be great. there are items on trade in the dev notes, but only in the very far future goals, aparently once a working economy is in. i would really love to see it go in sooner, it doesnt need a working economy to be fun. the roguelike i mentioned and all the space trader sims did not have a real functioning economy, they just pretended enough to be convincing. there are also devnotes on hiring yourself on as a wagon guard. thats another thing that ties in with trade nicely, and would be great to see.
so yeah, adventure mode. its going to get more and more awesome, and hopefully there will be some more stuff added in the release after this one.