[Suhiir]

I find them most useful for getting the AI to take a "non-least terrain point cost" approach early in a scenario.
You can "force" the AI to make something resempleing a flanking movement and such.

Another use I've found for them is forcing the AI to make a more coordinated attack.
Many times AFV's and APC's/IFV's have different speeds, with a bit of testing and tweaking you can get a mixed combat group to attack in a FAR more coordinated manner then the AI normally would. This isn't a real issue on smaller maps of course, but I tend to prefer larger ones where you have some room to maneuver.