When capturing/upgrading a remote land, player cannot easily determine whether the land is already linked to a base or not.
Well, one could say:
the map should give a clue, but map can be misleading (I will post a screen in next comment) and in my case, I've lost 15 UBT trying to create a base until I realized that there will be a problem:
I should be aware after first upgrade that something is wrong due to the text in post-upgrade messagebox, but the Notifications cover message boxes in Samsung One UI and thus It's really hard to notice it
Thus I'm left 15 UBT poorer and keen to propose this solution:
Could you expand the "remote capture" window with additional information about land affiliation?
("This land is not linked to any base." vs "This land is linked to base %s.")