This makes me so happy. Think about it: You've still got boats and the monorail, but now you'll have a no-wait, no breakdowns, motion sickness friendly extra "pipe" for people to flow through.
If you're parked at the TTC and can't deal with crowds after fireworks, you can just walk. If you're at the MK and want a snack outside the park, you can just walk. And if you can't walk it, there will be this many fewer people clogging up the monorails and boats.
It might even be more popular than the monorail for strollers and ECVs. Less messing around and less attention drawn as you try to park on the train.