Did Archduke Franz Ferdinand Want to Change Serbia? No.

Archduke Franz Ferdinand did not seek to alter Serbia. As heir to Austria-Hungary, he favored federalizing the empire (trialism) to grant Slavs equal status—potentially reducing Serbian irredentism by satisfying South Slavs within the monarchy.

Serbian nationalists saw him as a threat because his reforms could undermine the goal of a Greater Serbia. His assassination in Sarajevo (1914) by Bosnian Serb Gavrilo Princip triggered WWI.