Woah, Silo looks great. There's one feature I've been interested in... it takes a high poly mesh and a low poly mesh (of the same object), and "exports" the high-poly mesh as a bump map for the low-poly mesh. Does Silo have this?
Also, I've found that learning scripting stuff in Blender and Gimp helps immensely. Gimp is great, but it's not great for user-freindly batch-editing. however if you're familiar with scripting usage, you could, say, take 300 png files, shrink them, layer them, and export them as an animated .gif.

Tell me if there's a broken link to images in a thread I post, and I'll fix 'em.