Now this POD predates the formation of the Commonwealth by more than a century, but what if the Teutonic Order was completely crushed in 1411?
After their great victory at Grunwald, the united Polish-Lithuanian army stayed three days on the battlefield and then marched to the enemy capital of Marienburg at a snail's pace. By the time they finally reached Marienburg's walls, the defenders were ready and
withstood the allied siege.
If the Polish-Lithuanians go straight for the jugular right after Grunwald, Marienburg might have fallen and the Knights would have no choice but to make great concessions such as western Prussia and its port of Danzig more than fifty years before they actually did, in 1466.
How would Jogaila's successors have managed this state, which would be stronger than OTL earlier? Would they still have to make numerous concessions to the
szlachta?