It'll still be a major supplement, depends on how rare the drop is though.
Well whether it becomes a major supplement depends entirely on the drop rate, so we don't know that yet.
I doubt it'll become a major supllement, considering the zombie pigmen and their gold. But then again, we could make automatic mob farms which could harvest the iron.
The mob farm in Spawntown will very likely be completely outdated and useless with the new mob AI, but that shouldn't be too hard to test.
The jungles coming up in 1.2 sound pretty cool, any idea if we'll be able to get them in our server without having to crop the inhabited areas and transplant to a new map (which is pretty much how we got to this map from the last one, I THINK..... thats what it sounded like anyways when I read the whole thread).
If you update to version 1.2, all new chunks will have the new terrain. The only reason I crop it is to get more of the new terrain closer to our current settlements. There's no reason to transplant the cropped map to another one though, I've never done that.
But yes, we will get jungles after 1.2.