The thing is that they often DO try to explain away what many of us lorumites deem the more interesting parts of the lore. The Altmeri archtitecture and culture in the PGE1 sounds amazing. TESO is making them roughshod typical fantasy elves. The same applies here. They said that Suthay-Raht were the most common breed of Khajiit. It would be better if they didn't gloss over the more interesting parts of the lore because they cannot manage to represent it. Either through incompetence or more likely time and budget restraints.
Yar, I'm aware of those. I'm just wondering WHY they have to explain things like the omnipresence of the Suthay-Raht, rather than just let it be understood (as it always has been before now) that other Khajiit species exist, in numbers just as great, but aren't being shown right now/yet. It's not beyond the grasp of most people, I think, to separate the mechanical and technical limitations from the actual lore - we've certainly always acknowledged the other Khajiit subspecies before now even though we haven't seen them, we could easily continue to do that.
The ultimate ideal solution would be to include all the Khajiit subspecies, but if not that, then you needn't invent lore explanations for why they aren't present. Those who know they exist can easily understand why they aren't shown - those who don't know won't care anyway.