So, after a small conversation about the loots of Thaumcraft's Treasure bags, I decided to setup this experiment to find out what they did. Each set of bags was fed into an autonomous activator, and the item drops were fed into their own ME system, and the system was left running for about an hour. The results are as follows: Common Bag Uncommon Bag Rare Bag
Hmm, not much of a difference between uncommon and rare past the nether stars. The armour pieces would just be annoying for me xD
Rare seems to provide more of the valuable items, as well as the primordial pearls, which is nice of it.
I'll do that while I write the code for the item dumps :3 Just to note, the drops will be very modpack-specific.