I hope the DAZ developpers will be with you in this feature

For a one person work: Bravo !

Your are righ about the fact it will be usefull in Daz studio .I have used many land  generators or terrain meshs in Poser ,none for now in DazStudio. The last one i  have used is TerraDome from RDNA :it is good but no ecosystem plugin to populate it.

Ok It is not the main purpose of Poser or DazStudio  But putting directly characters  and vegetations in a background is nice for people who don't have VUE d'esprit....even for someone like me who import Poser files in VUE