Terrain brush selection

[The True Carchar]

I'm mainly a sandbox player in the game and sometimes I want to make a snowy Yutyrannus habitat in Isla Nublar 1993 and I can't because of the terrain brushes there. I would like Frontier to include a Terrain brush selection in Sandbox Settings, so you would be able to select what terrain you want. For example, if I want to make a desert in the Biosyn Sanctuary, it looks more grey than pale. With this setting you would be able to choose what kind of terrain brush you want, such as the sand from Nublar or Biosyn, or even what category of Rock texture you want.
I hope you like this idea and let me know if it needs to be tweaked