Feel free to mess with it and give me feedback. There is still one bug with spline orientation when a vine traces from the ground to a wall that I have been meaning to fix (it was fixed at one point but not sure what broke it again).
https://www.dropbox.com/s/0w1dux15lhcovqm/ProceduralBranching.zip?dl=0
Try the level called SplineThicken.umap. Some of the map files may not open in 4.13 but most should. This includes some proto coral assets and the dead vine spline textures I did for paragon.