I explained earlier in my thread my basic 11x11 layout and how I can deviate from it. Brown is door, grey is staircase, red is open space/channel over a magma pool (which is where I'd set up my magma forges.) I wouldn't actually lay out a fort like this, it's just to show you how I can deviate from the basic plan.
There are *lots* of advantages to this layout. It's easy to use and quick to designate, much harder to screw up when designating, keeps workshops close together, doesn't require corridors but doesn't make it difficult to use them if you want, allows you to forgo rooms or use them as you please, with a wide range of room widths and sizes (3x1, 3x3, 3x5, 3x7 and 3x11 all especially easy). Workshops need never block off access, it's very easy to stack stockpiles above and below a fort, it never causes traffic bottlenecks whilst not providing sufficient freedom to confuse the pathfinding algorithm. This layout makes it very easy to identify the function of a particular room, seperate rooms of different functions, is visually pleasing, symmetrical, and keeps the functioning parts of a fortress close together whilst also efficiently remove a great deal of stone. Exploratory corridors can easily be expanded into without impeding the overall design of the fortress. It's also easy to make wagon friendly.
Designing such a room is easy. For example, I can designate a room according to this plan like this;
[Enter][Shift + Right][Shift + Up][Enter][Left][Left][Left][Down][Down][Down][i][Enter][Enter][Down][Down][Down][Down][Enter][Enter][Left][Left][Left][Left][Enter][Enter][Up][Up][Up][Up][Enter][Enter]
. I can replicate this room easily across a z-level by picking the bottom left corner and
[Shift + Direction][Direction][Direction]
and repeating the whole process.
I can't
not design forts according to this plan now. I really recommend this to everyone, I'm so stoked about this.