Being easily available to see the 9 distance from flares, and whether or not this fairly dark place use 9 or 20 limit seems like a good improvement at least. I might try out OXCE later
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The game shows visibility as you move into the unexplored territory for the first time, so the information isn't secret. It would just be about making it easier available, so you don't need to track every step forwards in detail to learn all the visibility rules. Not sure why you call it cheating. Because people should learn those details? Or because noone should know those details, and you should be required to guess. Anyhow I agree it would make the information far more available, and thus make it easier to handle it, and as the information wasn't easily available before, it should at least be optional.
Not expecting it to be made, just thought I'd offer up a suggestion
I've been saving and loading too much in this game, and I'm trying to find ways of avoid it (like using activity graphs and patrolling to find UFOs rather than reloading a game because RNG lost it for me by not detecting enough UFOs 2 months in a row). Getting experience for my soldiers is a lot of fun, so I'd like to get to where I manage to keep most my troops after a battle, at least most my experienced troops, and that seems to entail learning a lot of mechanics. If I end up losing soldiers too often to what feels out of my control, then I fear load/save mechanics will still be too tempting.