This is every good reason why my interest in Canadian banknotes and serial number prefixes is dying.
To be quite honest, I don't seem to really care for the new Polymer banknotes as much as previous issues. The $100 and $50, I don't seem to really care for as much anymore. In fact, the Polymer $50 is probably the worst $50 note ever made, IMO. The $100 note, well, all I can say is, because of a more tan color than being chocolate brown in recent years, the Birds and the Scenes of Canada series $100's were ten times better than any issue since 2004 (it's a shame that the 1975 and 1988 issues had to be recalled, but life goes on).
But the ultimate reason why my interest in the Polymer banknotes is not as big as with previous issues is because of the lack of frequency of new prefixes. There would be new prefixes coming for up to a year (for the $20, up to 2 years), and after that, there won't be any more new prefixes for some years, thus watering down my interest in serial numbers vs. banknotes. This is why it looks like, so far, this will be one rare banknote series that I will enjoy the $20 more than anything else. I feel kind of iffy about the new $10, as I feel that, if they decide to recycle BG* prefixes, or release FEW-FT* prefixes, then chances are, I may not care about the $10 bill as much any longer.
And, oh yeah, I think I will be doing away with cash and banknotes before the end of 2014. By that time, the prefixes will have been fully issued, and my job will be done. After all, interests do have a life cycle, and this interest of mine will have lasted 32 years when it will likely come to an end later in 2014.