Simply put, the loot tables (at least the Abyssal Stronghold ones, haven't gotten around to look at the Dreadlands Mineshaft ones in quite a while) are a bit bland. The vanilla equivalents tend to have a bit more useful items in theirs (partially because vanilla, but also with additions from mods slipping in their things in them).
This issue is here to shine some light on this and hopefully get some input on ways to improve the structure loot tables. One factor that already cripples it to some extent is a lack of materials that could be useful to find as loot here (I haven't really looked much into the matter before writing this, so there could very well be something I'm completely missing now that would fit here off the bat).

Great idea! I think some new unique items would spice up chests a bit.
Or perhaps some lore relating to the dimension is found?

And Shinoow, I'm glad you spent a lot of time improving existing content. I played the 1.7.10 version a while ago and the mod sure came a long way.

Maybe some custom food like deadlands stew, cosemetic blocks,and base game materials that could be given a use in the mod.