I am not too sure what a "relaistic view system" is. Reading the comments it seems to be that it tries to make units cast a vision cone in front of them rather than a circle in all directions? Similar to used in some survival and stealth games?
The system seems to use CJASS, which I am not even sure what that is...
It seems to work by hiding and showing units based on its own, poll driven, vision logic. This would probably be fine for stealth game sort of gameplay but may have issues if used for anything more complex that expects multiple units, non-cooperative multiplayer support or units to be carrying out actions while not visible by the player.