Ruined Hobbit Holes and Houses
These would be found in Gladden fields and swanfleet, only much more rare. There would also a ruined fishing hut, in which you would find fishing rods and fish and loot (treasure and garbage can possibly use the fishing rarities)
Replacement of Elven Towers with Halls
way to many factions have towers. Woodland Realm could keep they tower, and have it be much rarer. these would look like the rivendell hall, except in Lindon, Woodland Realm and Dorwinion.
More Mines
Mines should not be just for dwarves. They would spawn in the Umbar Hills, Rhudel Hills, Mordor Mountains, Nurn, Nan Curunir, and Tauredain. They would be worked by slaves or low-tier citizens (such as farmhands).
Gondor Towers
Gondor should have towers, as it makes sense (there was a tower in Minas Tirith). This could replace the Watchfort (which just looks weird).
Ancient Taurethrim Village
Would be mostly or fully made of gold brick. Would spawn in the jungle at the spawn rate of a golden tauredain pyramid.
Ruined Watchforts and Repurposed Watchforts
made of Black Gondor brick, these would spawn in morgul vale. the ruined watchfort would have holes and such, the repurposed would be similar, with some holes filled in by Mordor brick. except inhabited by Mordor orcs.
Taurethrim Ruins Similar to most ruins, these would be a reminder of the ancient days of old. The chance that the ruin will be gold is the same as a pyramid being gold. I will post pictures later!