Features Request: Fortresses

[Boobies]

I've noticed you've started working on Nether generation. Presumably, this means we'll be able to look for fortresses soon. Would it be possible to also look into structure generation? A common thing people might look for is fortresses with 5 four-way crossings in soul sand valleys, in order to build farms. However, I'm not sure whether the generation of the structure is dependent on further stages of the terrain generation; if so, it might not be feasible.