I think while zone names are up to editing, the province and cities are not.
Cities can be edited by Region Managers.
However, the requested changes are changes on region level. Currently nobody really can work on these. It's sad, but at the moment we simply have to accept the mess that's there on region and country level. Regions that are plain wrong should be emptied from cities, maybe a pseudo city can be added to remind users that these regions should not be used.
To make sure we all talk about the same levels: A country is divided into regions (or states, provinces...), which are divided into cities (or towns), where the final crossing zones are located. In some countries the levels are used a bit differently but for technical purposes on BC of course still called so.
Maybe some higher power can do that?
Theoretically yes, but practically there's currently nobody who has access, time and motivation. I might say that there's hope for the future, though.