Alpha Problems are a FAQ thing. I'd suggest to use Masked Textures instead. Simply use a color other than black for the transparent parts (use the alpha channel, eg. with the TGA 32 Bit format). If the texture is big enough, it's gonna look pretty good, and no alpha random z-order frustration.
Use a terrain editor to paint the terrain, and a world editor to add everything together, buildings, furniture, terrain, plants etc.
Use a terrain editor to paint the terrain, and a world editor to add everything together, buildings, furniture, terrain, plants etc.