I’m not likely going to remove the padding between the cities (the blank line you mention), because without some spacing things will be too cluttered.
In the “Page 1 of 16” display, the “1” is a text field. You can type “10” into that text field and hit the enter key, to jump to that page.
That said - I definitely want to add the ability to search and sort this list. I also like the Favorite Cities idea, which could be used for sorting (or an entirely different display) here.