It is very early days and no-one knows what HOI4 will contain. Yeah it is hoi3, but I don't think (?) hoi4 will be that different (under-the-hood)? Certainly there is enough there to try to fathom what is what and how to proceed. He then got caught up in helping with EvW. But, he had lots of other stuff done and it looked good. The guy got as far as starting to port the map and that was that. I've been way too busy lately and haven't been keeping up with the HOI3 forum at all, but today I had a look and noticed an early effort to port DH-Kaiserreich to Hoi3. Of course, this should also open the door for other DH mods to be also ported to HOi4? The HOI4-DH mod, using as much of the content from DH as possible, and endeavoring to keep as much to the original DH as possible? But of course, with the addition of whatever hoi4 brings us.
Should we be starting to think of bringing Darkest Hour into HOI4, as a mod, so this great game can continue on? IF hoi4 is going to be wishy-washy, judging from a quick read of the announcement 'blurb', when compared to the magnificent detail and painstaking research within Darkest Hour. While we have a full year to continue modding Darkest Hour, we can still begin to think and plan ahead.