The fisheye for me is so minimal that it does not bother me in elite dangerous.. Yes there is a tiny bit and there is defiantly none in the 1.1.92, but I have gotten used to it. The 2.2 beta piplay has reduced it considerably.
The ghosting is quite bad, but changing my HUD colors to a vr friendly set has helped a bit, still notice it when there is a lot of brightness in my screen - ice fields etc, in fact I had to reduce the HUD brightness to level 3 in the right panel from the top level.
Check my tip in the vr content area of this forum