Add Input.GetAnalog( InputAnalog ) returns a Vector2 of either Move, Look or Trigger - can be used serverside too.
Strip XInput / Joystick methods completely from InputSystem, remove workarounds / hacks around it since we just do it all in C# now
Add Input.GetGlyph( InputAnalog ) - split InputAnalog.Trigger into LeftTrigger, RightTrigger so you can get the glyphs
Add action manifest file with PS4 / Xbox One configs ( other controllers should derive nicely from these )
Very simple controller settings button in main menu to open bindings
Don't cache invalid handles in the Controller API, seems to be a few ms where handles are invalid when a controller is plugged in.