By the time Trudeau gets kicked out they will be delivering in numbers and having all the bugs fixed. Maybe there will be changes to C21.
IMHO, calibre change between large and small frames are good on paper but practically not a selling strong point. It has failed with SCAR ( that died early) and then COLT LE901.
Using a large frame for 308 to run 556 is inefficient. If someone needs a 556 he needs something compact, there is no point of carry a 308 sized 5.56.
Instead of pushing out 223 and 300blk, along with desert tech WLVN, they should focus on large frame calibre change kits right the way - 308 and 6.5CM, and then 227 fury and 8.6 BLK.
From a range warriour perspective, i would rather open the trunk and take out another rifle instead of opening a bag of loose kits to install/uninstall optic and conversion kits with a screw driver even at the range, lets say the weather is nice and it is not even freezing. After doing this a few times most people just go out and buy another rifle. It doesn't save money, it is more hassle and there loose items floating around.
I see purpose in calibre exchange within "large frame" calibres, but I don't see the appeal of using small frame calibres in a large frame receiver - like unless it is using 308 for precision rifle training so not to constantly using an even larger frame like 338 purely for budgetary reason. That is a totally different ball game from 223 vs 308/6.5
Blah blah blah...