1) World Creation Changes:
As of right now, world creation is handled by generating a hung of landmass with some large oceans in it. Instead, what about landmasses pocket around oceans, like the real world's continents?
2) Town and City Changes:
Currently, towns and cities are all one road towns with buildings on either side. What about towns categorized into numbers from one to ten to judge their size? Towns at one could be extremely small like wilderness inns, while towns at ten would be extremely large cities with labyrinths of structures, possibly taking up multiple worldmap tiles. Towns on the water should also have ports.
3) Gods
Currently there are no Gods in Dwarf Fortress. What if Gods were randomly generated with assigned properties? For example a God could be God of Death, War, Fertility, or one of many other archetypes. Gods could have temples that worship them and a boon system similar to Nethack's.
4) Pre-Generated Myths and Legends
Currently there are no real legends coming before the character. What about a system similar to the God system? Legends could be generated with their story, and their treasure still guarded by whatever creature brought about their end. If the legend was lucky enough to survive, his/her ghost could guard the treasure.
5) Cultures
As of right now all human settlements are alike, from the desert to the plains. What about changing the dresscodes and preferred weapons from area to area? For example, one area could prefer to wear turbans, light clothes, and wield spears, while a different region could have its people prefer trousers and surcoats.
6) More Structured Naming System
Some times I run across a strange or non-sensical names on civilizations, dungeons, or areas. Is this a feature or something to be fixed later?
7) Other Adventurers
What about a system that generates other adventurers that may leave marks on the world as you visit them? I see hammermen and swordsmen in towns, but I never hear of them leaving civilization and getting killed in a cave so that I can loot their corpses.
Hunting, Cooking, and Eating
In Dwarf Fortress Mode we can make our own food from different items, my dwarves are very fond of eating gopher meat biscuits. In adventure mode, will we be able to kill a lion, cook it, and eat it's eyeballs?
9) More Skills
We have weapon and armor skills, what about others? Thievery, lockpicking, diplomacy, sailing, riding, etc.?
10) The Water
If we hit the land tile next to a water tile, why can't we look over the bay and go fishing? Perhaps later on you could implement a way to go into the sea and fight mermaids for their mermaid gold.
11) Conversations
It will be hard to implement, but perhaps you could be able to have conversations with strangers in town? Instead of asking generally about the locale and capital, there could be a wide variety of options from asking them the location of local shops to 'lousy weather we've been having lately eh?'
12) Organized Party System
Currently we can recruit party members, but we can't organize them. You could build up a prompt for organizing each party member's combat behavior, give them items, etc.
13) Different Types of Quests
Right now we can get quests to slay random monsters for no reason. What about escorting caravans, guarding vips, helping wrangle some pigs, or aiding the local militia burn some kobold camps? Even a bounty board with criminals' heads listed on it with rewards would be nice, especially if you could end up on it yourself.
14) Magic and it's Corruption
When magic is implemented, please let it be freeform. Instead of having just fireball, lightning bolt, poision, etc. spells let us manufacture them on the fly. For example, we start casting and choose the element, damage, type, perks, etc then hurl it at the enemy. Also, using magic over time should start to corrupt the players. Tentacles growing out of random parts of your body, runes being etched into your skin, glowing a strange color, anything to let other people know that something is not right with you, and that maybe they should chase you out of their town as a witch.
Anyways, great game and I'm looking forward to future versions.