What if Anne and Henry of Bohemia and Carinthia succesfully got rid of Elisabeth of Bohemia, Elisabeth of Bohemia has been betrothed to a low class noble before she considered being married to John of Luxembourg, I think a marriage between Stephen of Poland, Wladyslaw the Elbowhigh is possible in order to make her stop claiming the Bohemian throne, I think that would strengthen the claims of Anne of Bohemia and her husband to Bohemia and ending the Bohemian claims to the Polish throne.