Well, it's just a toy, so it's probably not gonna go up in flames. Although it would be deliciously magnificent if you could use it as fuel. Sadly you cannot, as far as I know, but still...
And I just figured I wanted to play DF, so I made a new bedroom/workshop design based on my favourite bedroom design from the wiki:

The big rooms are to give the nobles and other importants their needs, they'll probably only be around on 2 of the 8 levels I need of this to house all my dwarves. Every second floor will have the workshops and special rooms replaced by workshops. After 4 levels of this, I'll place the dining hall and all of the other common areas, before I get myself 4 more levels.
Learning from my last failure, I'll also have the bottom part of this, the one that leads to the lower mines and caves, be an underground fort with an underground moat.
EDIT: fuck it, made designs for the fort as well. Central stairs goes only upwards, leftwards stairs goes only downwards:

Having farms that far down will probably be a later edition, as it is kind of an hassle to get the water down there (in the right amounts), but being less reliant on the topside world is always good. Does anyone have any experience with walling off large portions of the underground caves to use as underground tree farms? Seems ideal, but getting all openings closed off is probably a nightmare. Running out of wood in the middle of a siege is not fun, though, especially if it's early enough that you need to wait some months to get your militia armed and trained before breaking the siege.