I love how players who have a sense of adventure get EXP for discovering tons of areas. But I'm quite sad about two aspects.
1. We should be rewarded double or triple the normal "new zone" exp when we fully discover an area.
2. We should be rewarded 5x(Alderaan, Tatooine, etc) the norm exp for fully discovered large planets, and 4x exp for medium sized planets (Dromund Kaas, Balmorra, etc.), and 3k for small and starter planets.
Let's just say when I see, "You have surveyed all of Alderaan!" I expect a nice reward...