I'd rather have vanilla terrain for a few reasons. One, wood is much easier to harvest. Most trees on custom terrain are hard to chop down, and I much prefer the going from tree to tree without it being a whole process. Two, it's easier to navigate vanilla terrain. For example, in custom terrain mountains take a while to climb/, while in vanilla they're much easier to. Things being at a smaller scale in vanilla terrain also helps, as it's easier to get around naturally generated obstacles. Finally, it just seems like having a ton of builds on vanilla terrain would be a lot nice than on custom terrain. Building your own terrain would also be a lot more essential, and builds are in general easier to spot out on vanilla terrain. I guess it feels more default and fits in more