We join the crowd that doubts the automation is primarily being pursued to increase efficiency and/or to enhance safety. We suspect the primary motivation is to reduce personnel expense. If they really wanted to improve efficiency, simply adding newer, more, or higher capacity trains would provide a higher throughput. Here's hoping for an actual improvement.
Higher capacity trains will only create problems with needing to extend all stations, which wont happen. The TCS system is a step in the right direction, decreasing separation between monorails on the same line, especially while one is requiring clearance, while allowing the monorails to run while a switch is in use, which isn't possible at this time.
The main part of this upgrade is to improve safety, and we all know it. No one else wants a July 5th, 2009 again.