I saw that you have a LOT of level 1-2 buildings. This is nearly always very very bad. Kills plunder and stats. I would suggest focusing on leveling up those 7 Lvl 2 cursed foundries and a few others. Ps. Strongholds of Shadows pretty much kill plunder unless you have some absurdly high percentage of them (I can't remember the exact number). If you're looking for high plunder that's gonna hurt a lot. In general your build is very scattered with many unfinished buildings. Pick a build and stick to it.