The problem is that the Third Age in the lore doesn't really play out like Crusader Kings. The territorial and succession disputes that are our bread and butter are rarely recorded. So if the player changes anything at all, you're outside the scope of what we have lore for.

So the main intended play style is to start where the lore ends and create your own story of how the Fourth Age might play out. Don't think of 3021 as the end of the story; think of it as where the training wheels come off.

If I were going to add a start date in the past, I'd be most interested in TA 861. Just after the partitioning of Arnor into Arthedain, Rhudaur, and Cardolan.

I would like to see 1300 and the rise of Angmar, or 1973 and the attack on Arthedain.

i think a couple of starting dates should be added. For example, idk about u but i WANT to see Morgoth and just like Tavrican said i think we should see either 1300 or 1973 and we should definitely see the true beginnings of Sauron and Middle Earth recovering from Morgoth. (also please take in mind i'm only a LOTR and CK3 fan NOT a modder) 👍

I agree with your suggestion.
I do not like this mod because most of the cultural advancements are already unlocked.

Whenever I play CK3, vanilla or modded, I always go for the earliest date.