Is this platinum jubilee coin more collectible than upcoming commemorative coins?
It will all depend on the mintage of the individual coins.
I was disappointed to read above that the already huge mintage of 25,000 was going to be increased by 14% to 28,500. I doubt that there will be much demand for this coin in the long run. All of the SD's that have retained or appreciated in value have an outstanding or topical design and a low mintage.
Good examples of this are:
2010 Sun Mask - Mintage 5,000
2010 Enameled Poppy - Mintage 4,907
2009 Montreal Canadians - 15,000
2005 Enameled Flag - Mintage 4,898
2002 Queen Mother - Mintage 9,994
The Canadians had an appealing topic to many Canadian Hockey fans, the Queen Mother coin was the year of her death but the rest are all significant in that they have a mintage of 5,000 items or less.
Most SD's these days are issued in the 15,000 - 20,000 range and historically mintages have been as high as 500,000+ None of these retain their value and end up floating to bullion value with a small premium
I anticipate a mass market (circulation $ or $2) either late this year or very early next year. Additionally a widely available SD, a premium silver and a gold and or platinum release that will have a smaller mintage.
These should have a 2022 date as 2023 will be full of coronation coins and sets. I would also be surprised if the coin isn't already designed as her passing was an inevitability... alternately, they could re-issue a past design with a dual-date differentiator but that would seem weak unless very well executed... Maybe a reissue of the 2018 $25- 3 coin set double dated.... or a silver variant of the 2004 gold $300 Quad Cameo portrait with double dating similar to the 2002 gold $300 reverse.
Surprisingly, given how many releases there have been over the years since the Montreal Olympics kicked off the modern era of NCLT, the Queen has not spent a lot of time on the reverse.