It’s self-evident that new design was generated by a desire to disable all the nagging, i.e. When is X going to be worked upon?
I think that it’s safe to presume that all the jettisoned “someday” items have been consigned to the trash or to a forgotten sticky note on some dev’s monitor.
I think it’s also clear that UE4’s development cycle is driven entirely by the needs of Epic’s own projects or those of large studios that use the Unreal Engine and that any hope that Epic will consider the needs of the hobby/small scale game developer is futile.
In particular, any features that might enable the further development of large scale open worlds do not seem likely to ever receive any sort of attention.
Of course, I’d love to be proven wrong. 