I just saw two new buttons in the map overview = research and fortune
I never saw those before (I used to keep a bookmark to refresh pages). I just finished my first "incredibly hard" mission as f2p. I also saw I just reached the 10k xp level.
It's quasi impossible the dev just added a new feature to the game just yet (the game is not in active developmetn anymore). hence... are there certain UI element unlocks upon reaching certain xp tresholds?