Honestly, with any luck-based thing I would just say pace yourself and try to get multiple things done. When Stronghold camping I always simultaneously spiritbond so at the end of the day something productive happened. Also helps if you don't go for 4 hours straight and instead do it in smaller bursts if at all possible, since luck is extremely finicky sometimes.

Now don't get me wrong, I'd love for "drop-rate based rarity" to go the way of the dodo as much as you, but in the meantime if you are after these items that might help.

The reason MMOs go this route is because it helps pad out content, but hopefully this team can produce enough to keep us genuinely busy eventually.