It should be requirement that voting districts be rectangular (to the extent possible).
I lived in the famous New Jersey "contiguous only to yachtsmen" gerrymandered district -- until the latest gerrymander, which put me back in a Republican district. Rectangular districts would make some sense, but gerrymandering goes back to the 19th century. Computer programs that are in use now would probably get around even that requirement. You'd see districts that are 250 miles long and a mile wide.
Paradoxically, the VRA is directly responsible for the current Republican congressional majority.