Original Post — Direct link

-When you haven’t discovered a Lost Sector, the logo is fully white and easy to see.

-When you discover a Lost Sector, the logo becomes transparent.

Some sectors become really difficult to see amidst the map once you discover them. Remove the transparency and make the logo the same color as the text that displays the name!

External link →
about 5 years ago - /u/gunmaster95 - Direct link

Hi! We actually recently made the discovered markers brighter internally so they're easier to spot once discovered. This is currently planned to go live around Shadowkeep (Though that may change!).