This is something that would be helpful to those many Canadian players (and other international users) who are locked out of otherwise acceptable CN liveries that are locked in the GP9, Dash 9, and SW1500 packs (not to mention the SD70 Volume 2). In research of the first 40 pages of the Engine Repaints section, I found 22 models for the GP9 Loco, seven for the Dash 9, and a few for the SW1500. However, Donner Pass so far supports exactly four repaints. I just got back to 2014, so perhaps I'm just going to start stumbling upon them soon, but it would be nice to have some of the existing repaints developed for the Donner Pass models, not to mention the Canadian liveries. It turns out many of the groups I mentioned also include a Canadian Pacific entry, though none of the packs have an official one.
If anyone is interested in helping fill the gap for those international users unable to get the other packs, this is a good way to do it. And I might not be as salty about not having a switcher option for Golden yard.