Ya know, I spent so much time seeing furniture made of rock blocks, I'd completely forgotten that most if it can be produced normally at a Mason
There are just a few items I'd like to see;
Stone: Bed. I know this seems kinda cheap, but the way I see it, only the frame is made of a given material. The mattress is still cloth stuffed with gravel. Maybe increase the requirement to 2-3 boulders to compensate. I mean, if the Dwarves can make comfortable Thrones out of rock...
Gems: Slab, Goblet, and Statue.
All such items for Bone would be a nice RP thing to have, but the final biggest crafting workshop that I put into all of my games is the Brick Oven. This Furnace converts any boulder (+ 1 Flux) into colored bricks (blocks). I don't think I need to explain the building potential here
If you throw these in, my inner Minecraft will be happy, lol. Lastly, I'm a fan of more difficult farming however I can get it. Less yield on underground crops (scaling with Skill level), but they are available at all seasons. Similarly, above ground crops produce way more, but do have seasons. If you can figure out a way to make prepared meals decay and otherwise be destroyed after a time, that would provide a good challenge (at least for me). I know some peeps like to spend a year working on nothing but food, then never farm again.
Oh before I forget, I have actually been playing a bit. Was year 3 and I just started a Tavern. I had a visiting, friendly Wizard
Somebody's pet Cavie dropped dead, which upset the Wizard greatly. (At least I'm assuming that was the cause, b/c I have no other explanation). He immediately went ballistic, wiped out the Tavern, the militia, and all my Dorfs
So no real feedback yet, due to !FUN!