What's your biggest problems/missing features with UE?

-> Actual Physics and not **** like this. Y’know, I want to have real pressure plattforms, and not faking them with Trigger Collisions. Games from 10 years ago had reliable physics simulations

-> Volumetric Light/Fog

-> Better Landscapes. A Heightfield alone doesn’t accomplish a good Landscape. We need Landscape Caves, Cliffs, Overhangs etc etc. Look at Just Cause 3