I'm sorry to hear that you really will have King Chucky on your $20.00 bills. I hope that ER2 lives to be 140 so that she out lives him, for Canada's sake alone. If the old girl doesn't go to 140 years old, you're going to have a loon on both your $1.00 coin and your $20.00 bill.

It's not customary (young 'un).
The Queen's portrait was replaced by PMs on some other bills and 1s, 2s and 1000s are no longer made.
I think the PMs only came out on the 'scenery' currency in the mid to late 70s and on the 100s in the 'bird' series.

It depends, lets see what the Common Wealth including the UK thinks of 'King Chucky'.

Start minting oval coins so his ears fit...