I see people making comparison to POE mirrors or D2 tyriel’s might. There is no comparison here.
Both poe and d4 have muiltiple times lower player base compared to what diablo 4 has right now. (yes im aware that the player base will drop by 90%… but in general d4 is more casual game and it will retain more players than the other 2 games with its seasons).
Official information from blizzard is that D4 has been played for over 400 million hours since launch. By millions of people. Even if only 5 million of those hours to be played at lvl85 and above… the fact we have only 3 confirmed drops… well those items are basically non existant and they may as well just not have them in the game.
The other major problem for me is … the fact we have so little unique items in the game. even if those 6 start dropping once a month, its still extremely boring finding the same unique over and over again. THere are like 10 uniques per class … everyone that has lvl80+ character has found them already multiple times.
Season 1 better have like 20 more for each class so we have fun and interesting options for more builds and customisation. (but i doubt it… more like 1-2 max for each class 
)