Thank you Jonathan and Rarenote! I was hoping that someone other than myself would point out that people have strayed from my original topic.
By the way, MY guess is that the $100-note will feature the Peace Tower. It was so named to commemorate the peace that came after WWI, during which time we were led by Sir Robert Borden, of $100-note fame since 1975. In addition, the Peace Tower, as well as most of Centre Block, was reconstructed during the Borden era after the fire of 1916.
Of course, this is just my GUESS.