Currently there are two tools that partially solve it, FoV view and dump of every level of map voxels (F10, F11).
Doing this as part of battlespace and replacement of normal graphic is possible but biggest problem is performance of this.
Like navie implementation that simply cast trajectory for each screen pixel, it will give close results but performance will be utra crap (1-4s to render one frame).
More performant solution will require lot of time to make correct result.
As result neither I or probably Meridian will volunteer to do something like this, but if someone else implement good solution for this I would not see problems to include it to OXCE.