Hi ! A game on the original Dol Guldur map (without plots) permitted me to see two bugs that I'm reporting here.
I was playing as Rivendell with Erebor and Lothlorien as my allies against Dol Guldur, that started in the "fortress".
My enemy stacked up his resources for the entire game, reaching 33000 R, that is stupidly high given the fact he only built dozens of mills with his army of spirits (the builders that disappear after creating something), and nothing else. Only mills the whole time, within his walls. And the only units recruited were, of course, ghostly builders because he didn't even built the buildings needed to train units. The AI of Dol Guldur faction seemed pretty broken during this game.
And even if I think you may have been pretty clever to stack up resources (to a certain point) when you're under siege, there's another problem. The AI also left the door on the left of the map open the whole time, letting my allies and their troops destroying everything in the "fortress".
I don't really know the meaning or the explanations between this weird game, but it clearly is broken here. Keep up the good work and thank you for the mod !