RoseKavalier, right, I could include editor in WoG mod with dll in EraEditor and the contents of unleashed.lod in unleashed.pac or even hmm35wog.pac, does not matter if you load resources via native functions like LoadTxtFromLod or LoadDefFromLod without specifying concrete lod. All you need would be to check via GetModuleHandle if era is loaded and disable a few patches/hooks, that may have conflicts.

In fact, you can take any Era package even now, create a mod and put .pac file in mod data and dll in EraEditor.