And you've hit this one on the head John. I think new products often don't solve a problem, they just give consumers a new option. Look at the open bridge binocular. Did that solve a problem? No, it offered a new style of binocular with a different hold.
Steve et al -
OK, the "modularity" aspect of the scope has actually obscured the actual intent of a
New Swarovski Optik Spotting Scope - the optical design itself! This is a
totally new re-figuring of the optical system, with Swarovision and the ability to properly place the eyepiece lenses closer to the prism (since the bayonet mount and sealing lenses are omitted) giving a noticeable increase in optical quality.
The 25-60x eyepiece is only Wide-Angle (Apparent FOV 60 degrees or larger) from 27x to 60x. Had they designed the eyepiece to be Wide-Angle throughout the range, they would have lost the 20mm eye-relief at the 25x and 26x settings. Now, THAT's sticking to your optical principles!
Permanently building the eyepiece into the body of the Observing Module also adds the option to move the zoom ring next to the focusing ring. In the field, this is amazingly efficient.
The new dedicated digiscoping adapters now use the strength of the scope body to support the weight of the camera and adapter, not the bayonet mount of the eyepiece as in the older models.
The addition of the modularity was of course figured into the plan, but if the engineers had said "the addition of the modularity will affect the final image quality", it is very likely that the modularity would have been left out. An 85mm New Scope was inevitable, but the modularity option made the 95mm both possible and economically feasible.
These scopes will out perform any spotting scope that is remotely similar in size to that of the chosen objective.