All is in title, I think mutant Flora (plant, trees, grass...) with mutant Fauna, is good ideas for a DLC, featuring a VEC laboratory, doing a experience in a jungle on flora and fauna

I'd think something like this will need to wait for a new game. One set where lots of fauna was present before the war... Maybe Louisianna. May not be a jungle but could argue FEV experiments made it jungle like round the swamps.

Point lokout insert many new elements, yet it was only a DLC of Fallout 3, and in Fallout New Vegas, a mission called "There Stands the Grass" deal this subject in vault 22, and it would be cool to have a new environment not dead because of radiation, but it would be adapted.

I love jungle like in Zerus planet in SC2 or Pandora in Avatars, something like this with dangerous plant and trees, carnivorous plant and a heap of creature, would be cool.