Quote - I modify textures, materials, lights and whatever all the time - that is not the point.

But if no effort has been done in a product - which claims to be poser compatible - to make it look acceptable and just leave all the nodes at default value, I consider that poor support for Poser.

If you import something designed for another program, I totally agree - it is up to the user to make it look good.

But once again, this sounds like personal preference as you don't like how the shaders came out. That is not a compatibility problem... the product works, you just don't like the way it looks.