didnt play in blight, but in legion i was getting way more fossils than currently, it got nerf or just kinda unlucky?

Nerfed.. gotta go deeper to find some

ah.. the deeper the better or is there a depth level that is used as a cap to make a huge difference?
cause i aint gonna very deep, playing EA and i'll just take dmg before my arrows explode

They nerfed it after 3.4 or 3.5. Dont remember when exactly. was Delve 3.5?
Anyway with a special build, the raider abbarath/coward's legacy runner, you could easily collect tons of fossils.
Price of abbarath's hoves was 4-6 ex. But i collected 100+ times its value on fossils and other things you find in the mines.
Still have that char on standard.

As for now. I still delved a lot in previous leagues because off the experience with that char.
And you find hardly any fossil below depth 70, far below averidge till depth 120-150. After depth 150 it is still profitable.