I added TheBellFox's skin in Blender, replacing the old skin almost perfectly. I think I flipped the UVmap to fit the texture. So I'm not sure how well it will go in Unity, you'll just have to try. I can't promise that I will create the crawler, but it's on the list now
The crawler is just a regular titan model, so yes. But if you don't know how to get the original animations it'll have to be rigged and animated manuallyIf you want the models and textures I have I can try upload the file somewhere~And I don't know why downloading doesn't work you, sorry