I decided to collect this essence now that heroic is available. I got both rank1 and rank2 in first try (as in did dungeon twice, but each dropped the loot).
Now after those two first runs, I have done the thing each day once. I have yet to see progression sprockets drop. I also need 4 of them. With this low droprate, i might be doing it for a month. Technically you can argue it should take some time, but I’m not sure, if the current droprate is ok.
Also… if rank1 and rank2 dropped on heroic, it means rank3 should drop too? It at least shows up in adventure guide list of loot from king mechangon on heroic. I’m asking, if it actually does drop. Anyone got?
Heroic should reset each day. (Tho, I have noticed it doesnt show being locked on the dungeon que list…). I also did get rank1 and rank2 on same week. Also, I have not had a single rank3 piece drop yet so should not be locked either.