DE supports worlds up 1^6 km with 1um precision. I doubt you manage to cram that full with game content ( comparison: earth surface is 4^4km and large games come up to 40km of content ). And if this is not enough you can do your own streaming.Dragengine has some interesting design promises, but your featurelist is years away from what we need. In particular I don't see any mention of continuous open world support (think GTA series or Oblivion). That's going to be a killer app that's here to stay in the years to come.
So tell me, what are you missing?
But perhaps I'm getting off topic since this about games and not application software in general.
Sorry, did you mean 10^6?DE supports worlds up 1^6 km with 1um precision.
Edit: Heh, hi bridgman
Hehe... maybe I should have written 1e6 instead but I had not been sure if all understand then