How many of the sienna, amber and black locatons have 'never' been discovered yet?

How many people have taken the shield, aura and barrier attunement egdes since they started and is there any link to a certain location and the number of times these edges have been taken?

I am not asking for a specific location, obviously, but was curious after speaking to someone about the system and them saying that they delete delete if they get 'hard' locations, which is very powergamey and made me question why I don't and just try to manage with the locations I have been given, even when it makes a character seem weak compared to said powergamey person who only plays the characters when they can have that ABS on tap.

Thanks in advance,