Regarding the hesalite vs Saphire,
Imho Side by side the hesalite simply looks better.
Of course the fact that it scratches can be a bummer so we have the saphire alternative solution.
the 321 movement is legend (I am happy it will be visible) , Combined with the much improved bracelet I believe makes it worthy of the jump in price point.
The only thing keeping the 321 speedy from being a Daytona CRUSHER is the 50m WR (vs the Daytona 100m)
A final note would be the “gold plated” parts... just make them full gold for the win... of course that would result in a handsome price increase : )