Units only single file when moving diagnal. Mainly I move in right angles. I like what spies can do too. And there are some creative ways to get them in someone's base. JDA's sentinal gun builds faster than the Sprawler gun post.
Rovers are almost pointless pieces of junk.
It's easy to mod this, but nobody is willing to use mods. So rovers and EMP are extinct in multiplayer. The sad part about this game is that it lacks people willing to play it long enough to enjoy. If your good at this game you'll have a lot of fun. It took me only 3 days to become good at it.