Isn't this board for suggestions to improve Ancestry.com?
It would not be that difficult to add links in the catalog. It's just text.
I'm not sure what you mean by "the standard for a card catalog"? a standard of not being comprehensive? Comprehensiveness is the point of a card catalog...?
"Users should just know what cities are there (somehow) or just deal with it" isn't an improvement. I already know these glitches and how to get around them. I'm suggesting getting rid of the glitches for other users who don't.