Relatively new player here, working my first character to 100% map completion. Here’s a few things I’ve found that would be mighty helpful.
1) Have a tab on the Hero panel that would show how much you have competed of each map. Something like the completion ratios that you get at the bottom of the loading screen would be nice.
2) One the world map, either show the border of your current map with an actual line, or have an option to hide/fade waypoints, skill points, etc. that are outside your current zone.