The reason why Toronto produced this show is simple. It was their answer to not getting a sit down production of Wicked. Prior to Wicked sitting down in Chicago they were looking at Toronto as another possibility. But, in the end they picked Chicago.
The city of Toronto thought that if they had a great show in their town that they could use their theatre district to get tourists to come visit them.
Thus, Lord of the Rings the musical was born.
I never saw the show considering that I live in NYC. But, it got world wide critics coming to the opening in Toronto. And my general opinion that I got from it was that the show didn't know if it wanted to be an epic play or an epic musical. It fell somewhere in the middle and it just didn't work.
"If you try to shag my husband while I am still alive, I will shove the art of motorcycle maintenance up your rancid little Cu**. That's a good dear"
Tom Stoppard's Rock N Roll