Auto-translated
So, I finally found the time to clarify the situation:
Three months ago, I once again started trying to work on the Overlord mod.
And this attempt turned out to be promising (previously, I hadn't been able to achieve anything; I didn't even know where to start and couldn't come up with anything on this topic).
The work ahead was not going to be quick. First of all, I needed to analyze a lot and reverse engineer the code of the original game.
I wasn't sure if I would even have time to create a decent, working version of the Overlord mod in the near future.
So, I asked Sav for help (the main programmer of Hota, in case anyone doesn't know).
Sav made more progress in analyzing the game's code than anyone else. He agreed to help. He agreed to give me all his work, on the condition that the Overlord mod would only be available for Hota.
I am part of the Hota team, I have invested a lot of effort in it, and I am interested in its development, so this agreement suited me personally. I agreed.
That is, I cannot create the Overlord mod for SoD because I am bound by my word.
And even if I weren't, the Overlord mod code is now tailored for Hota; the implementation for SoD would be structurally different. The fact that I focused on one platform (Hota) also reduced the development time.
For three months, I worked on the Overlord mod at a rapid pace, spending every free and not-so-free minute on it. I was very tired. During this time, I coded so much for the Overlord mod that it's more than I coded for all the other HD+ features in four years of development.
During these three months, my wife started to hate me and my HD project. If I hadn't finished it in these three months, it's completely unknown whether I would have ever finished the Overlord mod, because I wouldn't have been able to work at that pace for longer.
In Hota, there will be implemented game elements tailored for the Overlord mod, which will allow you to play with the Overlord mod for longer, focusing not on a fixed game date, but on the state of the game. Intelligent algorithms for interrupting the Overlord mod, which will allow you to play the Overlord mod to the fullest, will be developed jointly with Sav or even by him alone (I'm not sure if I will have time).
So, the most advanced and complete Overlord mod is only possible within the framework of Hota.