I use the version 1 when I need a unique terrain fast. It is important to realize that this package is basically a very well made user interface that controls a powerful and complex node network inside the meta node. Everything it does you can do with Vue. For example I usually start a new terrain with a terrain fractal, mix it with perlin noise and maybe add a turbulence node. This and more is already inside the metanode and you do not need to worry about the details. Plus he clearly added a bunch of math nodes to make everything internally consistent and stable across a wide range of input values. The nodes are typlically locked, so you won't be able to see inside (and learn how it is made).

It is a time saver for terrain making and  if you have limited success/experience with making terrains it can give you much better results than you can achieve on your own. It can't compete with a Vue/Worldmachine workflow, but that is a different beast.

Ciao

TD