>>350627979
It's basic, not terrible. Quick and dirty and perfect for blender newbs that want results without actually understanding what they're doing. If you're using a custom maid for example then the textures are already in squares and have islands so it's great for that. Just don't be retarded and use whatever setting that gives you a massive section of empty space trying to make it into a perfect square.
The alternative is to duplicate the model, give it a second UV map, smart unwrap it, and then bake the texture onto your now one material mesh. Video tutorial here: https://www.youtube.com/watch?v=9airvjDaVh4 also obligatory
>using anything other than 2.79 to bake