krieger
Banned
I don't think that Charles could be able to take his father's place. He would not have such an authority to call Council of Constance (unless he is some like Saint Louis IX, but it seems very unlikely and in 1414 Wenceslas is still alive and Charles has no land to rule on his own. He has no Imperial dignity either, so his ascension after his uncle would be not viewed by Czechs as a threat. Sigismund had Hungary and was absorber by Turkish problem. Charles controls almost whole lant behind Poland's western border and has no serious threat to his kingdoms. He is in better place to struggle for Polish crown than his father IOTL.Charles would partially take Sigismund's role ITTL, Jan Hus is not safe.
Returning to claims-Sigismund of Luxembourg IOTL, as great-grandson of Casimir III's oldest daughter also had superior claims IOTL, nothing came of it.