Serbia and Wallachia need a border

[BongBong]

Serbia and Wallachia had a historical border that i believe was there but it was removed,why is that?

I rarely see ottomans expanding directly into Hungary without taking Serbia or Wallachia first. My guess is that so the balkan Nations can call Hungary into war with ottomans and promise them land? Or so Austria can have guaranteed military access in order to be able to fight the ottomans?

I still think that Serbian-Wallachian border is more important so that these two nations can expand into each other,and also Austria can always ask Serbia or Wallachia for access,i doubt they would refuse.

EDIT:

 

[Alexona]

Here's the map of the deal:
Serbia is created again (after 1439) it's the red striped area

As you can see there's a "layer" on the river Sava from Nándorfehérvár/Belgrád to Knin. It was Hunyadi's doing. Inhabitants were moved north from these areas, it was a military area, a wasteland with forts and supply lines. This area's center was Srebenik.

And you can see that there's no joint border with Wallachia. So it's definetely a no.

Just out of sheer curiosity, why isn't the Duchy of St. Sava represented on this map in any way? Also, I see Montenegro independent there (which should be called Zeta in 1439, I think) but wasn't it basically strongly tied to Serbia or at least their despot?

Very interesting thread (or rather threads, as I see there are at least 3 similar active threads!)
I agree with many points brought up here:

Most imporantly, Belgrade/Nandorfehervar should be represented separately, with a fort. It was arguably the most important fort in the area, under strict Hungarian control. Obviously it should have serbian population, with orthodox religion.
Also agree that the Hungarian "Vegvar zone" was of utmost importance in the various Ottoman-Hungarian wars. Belgrade, and for various parts in history the many important castles in the area of Smederevo/Szendro and Golubac/Galamboc should also be represented.
(I'm thinking about expanding the Vegvar strip of the Belgrade and Smederevo provinces to the northern parts of Bosnia as well. This was also mentioned in one of the threads, would be great to have it this way, but not as important as the northern Serbian parts. If I do this, it would be a separate Hungarian controlled province, with Srebrenik as it's capital)

About the border between Serbia and Wallachia: I'm on the side that it should be there.
It could have been either way in 1444, and I doubt that we will ever have any real facts about it.
For my taste it makes more sense this way, mostly for the potential later border conflicts. But actually I consider this a rather minor issue, I could live with it either way.

Here is how I had it in my personal mod:
Both Belgrade (with a Fehervar/Nandorfehervar shown as a dynamic name for Hungary) and Smederevo have a fort.
Smederevo is the capital of Serbia (and yeah, it's on the wrong side of the river, but looks good this way, and still way better than the current position)
The big Srbija province is the original one (pre 1.18), with Krusevac as the provincial capital.

View attachment 224969

I like your suggestions, they seem to be very sensible overall and would improve the Balkan gameplay in my view. And sadly, I'm gonna repeat myself after what I wrote in a similar thread but I wonder what you personally would say about adding Srebrenica (as either a Bosnian or a Serbian province, I'm not sure about its status in 1444) to the map?