Someday could be included in Unreal Engine 4 official Code. Like was spider walk, which has been in UDK! is a physical phenomenon as important as the gravity is, which should have already been implemented in Unreal Engine 4 Code for non-programmers, or Blueprinters guys. Something, as proposed by in 01/27, something able to support any sort of gravitational influence, one or multiple influences, can be very interesting!