Regarding my earlier post, I realised that Faction Events can help you if you mess up your Delve by advancing further than you can go with the Faction Team or with no deaths.
Because each Faction Event starts at L20, you can always play lower levels than your max Delve level, and catch up on those other two sources of Reknown.
Of course, once we have dozens of Factions, any particular Faction’s Event may take a year or more to come around.
Also, Tacet’s been complaining that Epic Ingots are now the rarest in the game. That may be true directly, but they can be crafted from all those excess Common, Rare and Ultra-Rare Ingots that we’ll all soon have. So that does offset things a litte.