Good post EKM.
But I feel before they can better the .323(or.325 WSM)rounds they need to look at spacing and mass production.The .323 will not be as popular due to the .338.
I think if they would go with a mid size case between the WSM and the Ultra Mags,then and only then they could compare to some serious calibers.Maybe develope a line called the Medium Ultra Mags or Mums for short.
Ther could beseveral chamberings
25 MUM
260 MUM
280 Super express Mag
skip 30 cal and develope a
.323 MUM
then top it off with a
.330 MUM
All of these slightly biger tha the Dakota's Mag and smaller than the RUM

Sorry i'm alittle off base but just some mindless rambling
BBJ