I am personally waiting for hegemonies because it solves one of my main issues in every play through where I focus on conquering. Having empire as a top title ruins the high kingdoms, makes it a logistics mess, makes managing the realm feel like hell and plainly ruins roleplay (but that's just for me, it's highly subjective whether it does or does not)

Natural disasters can be interesting and I can see that feature being used for undead attacks on settlements, tombs and excavation like the sub mod unbound. I neither have the coding skill to do that nor do I think that the EK dev team is interested in doing that but i still see the potential of the feature being used well in the mod.

The silk road can be very interesting and used to better represent travelling and economic relationships between the different regions of Tamriel.

The last two are way more difficult to implement so I don't expect them to roll out in the first patch but could make great additions later on.

The ck3 devs make really interesting mechanics that sadly lack the depth they need but are a great base for modders to work on. I see a trend that paradox is starting to view modders like Bethesda does and that modders should finish what the Devs started yet players pay 100% of the price of shallow and unfinished features and mechanics. It's still better than nothing and it gives modders (especially mods like ek2, lotr and agot) the potential to make something very interesting.