On a more serious note, I think it would be cool to have musical instruments that are actually playable. I mean not something like guitarhero or a minigame, just something where you can equip it and choose from songs to play, or maybe even something that functions like the Ocarina from Ocarina of Time. It would really add some depth to the world, especially if you could be a traveling bard, or have bards and entertainers all across the province of the next game.
You could have all kinds of instruments too, lutes, drums, flutes, or anything they wanted to come up with too.
I should be able to make a feasible living this way, too. Not like the rubbish from the entertainers mod for Morrowind. (It's official, I'm allowed to insult it
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One thing I've always wanted to do in TES, is be a travelling bard. Travelling from town-to-town, playing my songs, making my money. I would be able to earn myself a shiny penny, make "aquiantences", learn secrets and travel the lands.
While I'm on the topic of making money outside of basic questing, I'd also like the ability to be a travelling salesman. I could buy the native equivalent of the Guar, and travel across the lands buying and selling wares. Hopefully, there will be a more working economy, so I could buy wares somewhere, and sell them for a better price elsewhere. I could come across the occasional other travelling salesman on the roads, who could give me great prices. Also, I could ask any merchants, in towns, or wandering, what they are low on stock of. I could get some of that item, and sell it to them for a higher price. Farms and hunters would be able to give me wares at a cheaper price than merchants.
Also, I'd like to hunt. I want to be able to stalk animals, and slay them with a ingle arrow from a distance. I know I could do so in past games, but it was always pointless. I could never get any pelts or meat that was worth the effort. It took far too long, and cost far too much, if using arrows, to be able to get my money's worth. I want to see better valued animal pelts and meats.