The plants with Vue are not limited and anyway shape or form. Your just not using them right yet. No two are the same and you can edit them to death making completly new versions. Look around you can download extras for the vue plants already from a few sites. I'll probibly also make mine available someday.I've made about 50 at least new creations. Varians site and a few others have tutorials on how to edit them and extra textures to get you going on them.

Now having said all that Plant studios plants work wellish I'll say in vue. Not perfect Vue plants are way better. PS plants are large poly masses usually and they don't support alpha leaves.

Just import them, texture, and render.

If you just go around the web a collect all the extra textures there is already for Vue's plants and trees I think that will give you more than 100 different kinds to add to your Vue collection.

Varian's web site will explain how to make them look completly different from the defaults.