Mmm don't think so. 1.9 already brought a new end, which doesn't need much tweaking in my opinion. I would be happier with caving as that is a more fundamental component of Minecraft survival that hasn't been updated in years. Some new mobs/bosses would be fun as survival isn't that challenging anymore.i have a hunch.
Its literally barren except for some turtles and purple plants, the occasional boat.Mmm don't think so. 1.9 already brought a new end, which doesn't need much tweaking in my opinion.