Nice stuff there

Couple of points, in terms of speeding up making things like this, and saving texture space:
1. Things like the "teeth" should be made once, then multiplied/moved/resized across the object once you've uvmapped them. While it seems "better" to make each one unique through the texture as well as the geometry, 99.9% of the time, it's a waste of texture space, because players aren't going to view it closely enough for it to matter. That way, you're only using a small amount of texture space for these repeated objects, and since you already have the UVs set up, you can distort the verts a bit, giving each one a unique look, without using more texture space.
2. The same goes for any shapes that are repeated. in this case, due to the nature of the object, you probably could halve the total size of the texture by doing the outer edges of the spire in the same way- after all, they're really just the same shape, repeated. The overall shape of each section is repeated, of course, but they're really the same shape, with minor changes that could just as easily be done after uvmapping.
All of that said, this is a really pretty Feature, and I really like how it came out. If you use 1% reflectivity, you can make the bits that need to be shiny shiny, and use of welding during the final step will make it really come together with a nice organic look.