After playing a game with cheatTurn set to 200 I realized how much less artificial and more realistic the game has become. I really liked it much more than the default setting. However, enabling this for EVERY AlienDeployment entry is a real burden, especially if you use a lot of new terrains/missions/uf/usos. So here my suggestion:
Could we make the cheating AI an option?
IMHO, I wouldn't know which one is less realistic: the AI knowing where all your units are, or aliens only maneuvering to attack only when they see an enemy unit otherwise off they go patrolling a map section completely in the wrong direction of the fight.
What I do know is that cheatTurn was designed to speed up fights (it is also triggered if there are only 2 or less live aliens) and prevent the endless search for last alien which is hiding in the closet. It also gives an incentive to the player not to camp because if most aliens are still alive by turn 20, then he/she will be most likely swarmed, if they are spread out across the battlefield.
As a modder, having cheatTurn as an option is also undesirable because I have created maps/missions for Area 51, designed for different cheatTurn settings (some have is set as 0, others have 30). Giving control to the player to disable all of those would really mess around with these missions.