You would think that Epic can afford to pay it’s developers to get this done.
Not only is this requested MANY times, not only is the navigation in the editor below par,
but there are MANY competitors already utilizing this! Unity, Ogre, Irrlicht, and many others already have support for this.
I am not saying UE4 is bad, but I am saying there needs to be support for 3D mice and the editor navigation needs some revamping.