Well it does make sense, as Friedrich III, the ruler of Inner Austria (in game Styria) had already inherited the lands of his uncle, Frederick IV (in game Tyrol and Breisgau/Sundgau) and was the regent for his nephew Ladislas the Posthumous (in game Austria without any other cores) who also was king of Hungary and Bohemia, at least nominally.
Ladislas Posthumous never really had power in Austria power, and neither in Hungary for that matter. Only a bit more in Bohemia but he died too young for it to really matter.
The statu quo is fine in my opinion, but that said, if more details is needed, the following setup could prove more historical without hurting balance (too much):
- Independant Styria, also Holy Roman Empire, with Friedrich III at his head.
- Styria would also hold Tyrol and further Austria (Breisgau/Sundgau) either directly or in personal union (Burgundian type of division) under Friedrich III.
- Austria proper under regency for Ladislas the Posthumous, with Friedrich III as regent. In order not to break balance, Austria should start as a Styrian vassal.
- Modify the "Unite the House of Habsburg" decision so that later on, if Tirol, Styria or Austria is still rule by an Hapsburg and has the other two either in PU or as a vassal, then everything is inherited, cores are granted and Austria is (re)formed. The decision would be normally passed by Styria, but this could make a nice achievement for the other two to pass it. I suggest 1490 as a base date, to reflect when Maximilian I united all Habsbourg duchies.
This split would be more accurate historically, and won't break balance in MP as we saw it with the Burgundian example: breaking BUR in small countries made it stronger, not weaker.
