Hi. It would be really cool if Epic could add procedural planets support for Unreal Engine 4. The engine’s precision could be changed to 64bit and some biome/ecosystem painting tools could be added.
These systems could replace the need for “World Machine”.
That’s unlikely to happen–that feature is so specific to a certain game type and would require such a large amount of work. They have to focus their development efforts on important bug fixes and features that will benefit the most