Coh2 felt like the distance chosen was to maximize texture resolution. Always seeing the full texture resolution and not a Mip-Mapped version at half or less resolution.
This statement was for 1920x1080 which was the typical display res when Coh2 came out. Since you should design your game for the next gen of hardware, perhaps the new zoom level is optimized for 2k or even 4k screens.
Since people are complaining about FPS problems, I am not sure designing for 2K would be a great idea just yet. If the lags are CPU dependent, and are not tied to the GPU, maybe its not too bad to think in terms of 2k.
MIP MAPPING
When a polygon is viewed at such a distance or angle that there are less pixels on the screen than the texture size being drawn, the next lowest texture resolution will be used to avoid aliasing. So a 1024x1024 texture will be drawn using a 512x512 or smaller version when viewed certain ways.
Coh2 felt like it was designed so the 1024x1024 full res version was available most of the time.
Ironically, vCoh had really low texture resolutions. When Coh2 came out they were higher res and people liked the vCoh look better. Now for Coh3 they may be even higher res and people are complaining it is cartoonish. Maybe people should lower their texture quality and see if its still cartoonish looking