<sigh> Yes, it's the issue that just won't go away.
Small coins will eventually be discontinued, The $5 note replaced with a coin, and $200 and $500 note denominations will be introduced. Inflation will make it inevitable. The question is... When.
I personally would like to see this lineup:
1¢, 5¢, and 25¢ - drop
10¢ - same size as today's; new design
20¢ - same size as today's 1¢, new design
50¢ - same size as today's 5¢; use coat-of-arms
$1 - retain loon and golden colour, make it same size as today's 25¢
$2 - Retain bimetallic design, make it a bit smaller like today's loonie
$5 - A bit bigger and thicker than the new $2; bimetallic
Notes - drop $5. Keep the rest the same. Move Laurier to a new $200 note.