[Mobhack]

Of course one thing the end user cannot change is that the game's visibility code is hard-wired to the 50 metre hex.

Any scenario is now operating at half original visibility distance.

The scenario designer, if he doubles that will very soon hit the hard limit (99?). Also, high visibility in game may well trigger dust trails (especially if the units move twice as fast!) and high visibility means further LOS penetration into cover - so previously hidden units may no longer be so.