Oddly enough, I hate quarters. Why? Because I see one with a new design that I don't have and I have to keep it!
I'd certainly appreciate it if the mint started producing unique designs on other coins. The nickel is a good candidate for that, because of it's size, as well as the loonie and toonie. But if they made loonies and toonies collector's items, I might be inclined to not use them either.
I'm the opposite in one way. I loved the 1992 provincial quarters (similar to the more recent multi-year state, district and territorial quarters of the US, of which I've been collecting). The 1999 and 2000 quarters are okay, but not anything special.
I've also liked the loonie and toonie special issues - the 1994 D-Day Loonie, the 1999 Nunavut Toonie, etc. The 2005 "V" nickel reissue was also classy.
The ones that bother me are all the Winter Olympics quarters (which are advertised), and the breast cancer quarter of two years ago. I don't like that particular one because if they do one for breast cancer (the current bandwagon disease to support, nothing against it otherwise), why not other major diseases? It was pinkwash.
The mint creates all these stupid quarters with the intention of having them out of circulation to help generate a profit.
Meanwhile, I'll finish trying to collect the US Mint territorial quarters, having already got all 50 states, DC and PR.
As for a new set of quarters, how about the Fathers of Confederation - starting with the first bunch but also including the later "fathers" - Louis Riel and Joey Smallwood among them.
The "Famous Five" - the only Canadian women on our currency - is on the back of the $20 (and like most of our famous men, were not perfect - racism and support of eugenics tainted some of those ladies). There are other women for sure that could be commemorated in a series of "nation builders."