Say that Wenceslaus is killed in late july 1295 by classic horse ridding accident. His death before he get crowns of Poland and Hungary would cause massive butterflies in whole Central Europe. His 5 years old son Wenceslaus III would inherit Bohemian throne. Once again Bohemia would need regency (likely Habsburg dominated, Wenceslaus' wife, Judith of Habsburg would not die giving birth to her 10th child in 1297), thus Czech Kingdom would not be as agressive as in OTL. So no Premyslid Poland and Hungary, but OTOH Wenceslaus III would likely avoid assassination, thus Premyslid Dynasty could survive longer. That would have massive impact on HRE-assuming Albert Habsburg is still assassinated by his disinherited nephew and Henry of Luxembourg is still elected as King of the Romans. Without empty Bohemian throne Henry could not make his son John King of Bohemia. So with John of Luxembourg being not as strong like IOTL, is there a chance Electors would support him as successor of his father on the German throne? Meanwhile Charles Robert would have no Czech opponent in Hungary after death of Andrew III in 1301, how would he manage situation in such case? In Poland changes would be really massive. Death of Wenceslaus II would create power vacuum in Lesser Poland. Newly crowned King of Poland, Przemysł II, would use opportunity to take Cracow and finish his job of reuniting Poland. With royal title and support of Church he would have no serious competition. Moving to Cracow, King Przemysł would be outside reach of Brandenburgians and would not be murdered. Poland united by Przemysł should be far more stable than OTL Łokietek's Poland. Already crowned Przemysł would not need to struggle for Royal Crown, without Wenceslaus' Polish coronation there are no Czech claims to the Polish throne, Henry of Głogów has no chance to claim Greater Poland with undisputed heir of that land being alive, Przemysł, being Duke of Greater Poland before his coronation, had better predisposition to rule large country than Łokietek, who started as ruler of tiny duchy in Cuiavia. With earlier united and way more stable Poland, Teutonic Order would have no chance to grab Gdansk-IOTL when it happened Łokietek competed with Henry of Głogów, who controlled Greater Poland (so Łokietek couldn't use forces from nearbly Greater Poland to defend Gdańsk) and would take Cracow easily, if Łokietek moved his forces to Pomerelia.